diff --git a/src/common/bookctrl.cpp b/src/common/bookctrl.cpp
index 3926058ab5..25498b0fa4 100644
--- a/src/common/bookctrl.cpp
+++ b/src/common/bookctrl.cpp
@@ -146,9 +146,7 @@ wxSize wxBookCtrlBase::DoGetBestSize() const
 
     // convert display area to window area, adding the size necessary for the
     // tabs
-    wxSize best = CalcSizeFromPage(bestSize);
-    CacheBestSize(best);
-    return best;
+    return CalcSizeFromPage(bestSize);
 }
 
 wxRect wxBookCtrlBase::GetPageRect() const
diff --git a/src/common/ctrlcmn.cpp b/src/common/ctrlcmn.cpp
index 425b947b66..1489fd129b 100644
--- a/src/common/ctrlcmn.cpp
+++ b/src/common/ctrlcmn.cpp
@@ -584,15 +584,9 @@ wxStaticBitmapBase::~wxStaticBitmapBase()
 
 wxSize wxStaticBitmapBase::DoGetBestSize() const
 {
-    wxSize best;
-    wxBitmap bmp = GetBitmap();
-    if ( bmp.IsOk() )
-        best = bmp.GetScaledSize();
-    else
-        // this is completely arbitrary
-        best = wxSize(16, 16);
-    CacheBestSize(best);
-    return best;
+    // the fall back size is completely arbitrary
+    const wxBitmap bmp = GetBitmap();
+    return bmp.IsOk() ? bmp.GetScaledSize() : wxSize(16, 16);
 }
 
 #endif // wxUSE_STATBMP
diff --git a/src/common/treebase.cpp b/src/common/treebase.cpp
index b2cfd7960a..50359c40f4 100644
--- a/src/common/treebase.cpp
+++ b/src/common/treebase.cpp
@@ -279,14 +279,9 @@ wxSize wxTreeCtrlBase::DoGetBestSize() const
     // need some minimal size even for empty tree
     if ( !size.x || !size.y )
         size = wxControl::DoGetBestSize();
-    else
-    {
-        // Add border size
+    else // add border size
         size += GetWindowBorderSize();
 
-        CacheBestSize(size);
-    }
-
     return size;
 }
 
diff --git a/src/generic/bmpcboxg.cpp b/src/generic/bmpcboxg.cpp
index 332e6ca4d3..6432bccaf0 100644
--- a/src/generic/bmpcboxg.cpp
+++ b/src/generic/bmpcboxg.cpp
@@ -278,8 +278,6 @@ wxSize wxBitmapComboBox::DoGetBestSize() const
 
         if ( h2 > sz.y )
             sz.y = h2;
-
-        CacheBestSize(sz);
     }
 
     return sz;
diff --git a/src/generic/calctrlg.cpp b/src/generic/calctrlg.cpp
index a03cfbd4da..d30e835f34 100644
--- a/src/generic/calctrlg.cpp
+++ b/src/generic/calctrlg.cpp
@@ -709,8 +709,6 @@ wxSize wxGenericCalendarCtrl::DoGetBestSize() const
         best += GetWindowBorderSize();
     }
 
-    CacheBestSize(best);
-
     return best;
 }
 
diff --git a/src/generic/headerctrlg.cpp b/src/generic/headerctrlg.cpp
index cc720c8617..88adf18678 100644
--- a/src/generic/headerctrlg.cpp
+++ b/src/generic/headerctrlg.cpp
@@ -135,11 +135,9 @@ wxSize wxHeaderCtrl::DoGetBestSize() const
 
     // the vertical size is rather arbitrary but it looks better if we leave
     // some space around the text
-    const wxSize size(IsEmpty() ? wxHeaderCtrlBase::DoGetBestSize().x
-                                : GetColEnd(GetColumnCount() - 1),
-                                height ); // (7*GetCharHeight())/4);
-    CacheBestSize(size);
-    return size;
+    return wxSize(IsEmpty() ? wxHeaderCtrlBase::DoGetBestSize().x
+                            : GetColEnd(GetColumnCount() - 1),
+                  height); // (7*GetCharHeight())/4);
 }
 
 int wxHeaderCtrl::GetColStart(unsigned int idx) const
diff --git a/src/generic/treectlg.cpp b/src/generic/treectlg.cpp
index aa8a7dc0da..1aeac569fd 100644
--- a/src/generic/treectlg.cpp
+++ b/src/generic/treectlg.cpp
@@ -4153,9 +4153,6 @@ wxSize wxGenericTreeCtrl::DoGetBestSize() const
     if ( dy )
         size.y += PIXELS_PER_UNIT - dy;
 
-    // we need to update the cache too as the base class cached its own value
-    CacheBestSize(size);
-
     return size;
 }
 
diff --git a/src/gtk/bmpcbox.cpp b/src/gtk/bmpcbox.cpp
index 43d522c08a..9fc5ac0e1f 100644
--- a/src/gtk/bmpcbox.cpp
+++ b/src/gtk/bmpcbox.cpp
@@ -175,10 +175,8 @@ wxSize wxBitmapComboBox::DoGetBestSize() const
 
     int delta = GetBitmapSize().y - GetCharHeight();
     if ( delta > 0 )
-    {
         best.y += delta;
-        CacheBestSize(best);
-    }
+
     return best;
 }
 
diff --git a/src/gtk/button.cpp b/src/gtk/button.cpp
index 0dbe3a70c0..7329f8a3d4 100644
--- a/src/gtk/button.cpp
+++ b/src/gtk/button.cpp
@@ -320,7 +320,6 @@ wxSize wxButton::DoGetBestSize() const
             ret.y = defaultSize.y;
     }
 
-    CacheBestSize(ret);
     return ret;
 }
 
diff --git a/src/gtk/gauge.cpp b/src/gtk/gauge.cpp
index 7c8c1c9cd4..85c044899b 100644
--- a/src/gtk/gauge.cpp
+++ b/src/gtk/gauge.cpp
@@ -77,7 +77,6 @@ wxSize wxGauge::DoGetBestSize() const
         best = wxSize(28, 100);
     else
         best = wxSize(100, 28);
-    CacheBestSize(best);
     return best;
 }
 
diff --git a/src/gtk/listbox.cpp b/src/gtk/listbox.cpp
index dbc8db0f71..2181bb926b 100644
--- a/src/gtk/listbox.cpp
+++ b/src/gtk/listbox.cpp
@@ -886,9 +886,7 @@ wxSize wxListBox::DoGetBestSize() const
     // Don't make the listbox too tall but don't make it too small neither
     lbHeight = (cy+4) * wxMin(wxMax(count, 3), 10);
 
-    wxSize best(lbWidth, lbHeight);
-    CacheBestSize(best);
-    return best;
+    return wxSize(lbWidth, lbHeight);
 }
 
 // static
diff --git a/src/gtk/spinbutt.cpp b/src/gtk/spinbutt.cpp
index 6aaaf82d83..5147f09557 100644
--- a/src/gtk/spinbutt.cpp
+++ b/src/gtk/spinbutt.cpp
@@ -204,7 +204,6 @@ wxSize wxSpinButton::DoGetBestSize() const
         w = 6;
     best.x = w + 2 * m_widget->style->xthickness;
 #endif
-    CacheBestSize(best);
     return best;
 }
 
diff --git a/src/gtk/stattext.cpp b/src/gtk/stattext.cpp
index 5d9ffce8e3..c560dcb4b1 100644
--- a/src/gtk/stattext.cpp
+++ b/src/gtk/stattext.cpp
@@ -255,7 +255,6 @@ wxSize wxStaticText::DoGetBestSize() const
 
     // Adding 1 to width to workaround GTK sometimes wrapping the text needlessly
     size.x++;
-    CacheBestSize(size);
     return size;
 }
 
diff --git a/src/gtk/tglbtn.cpp b/src/gtk/tglbtn.cpp
index 1b91146de5..b4d90adb5f 100644
--- a/src/gtk/tglbtn.cpp
+++ b/src/gtk/tglbtn.cpp
@@ -242,7 +242,6 @@ wxSize wxToggleButton::DoGetBestSize() const
         if (ret.x < 80) ret.x = 80;
     }
 
-    CacheBestSize(ret);
     return ret;
 }
 
diff --git a/src/gtk1/button.cpp b/src/gtk1/button.cpp
index a414ecfa4e..3f7c09026b 100644
--- a/src/gtk1/button.cpp
+++ b/src/gtk1/button.cpp
@@ -238,7 +238,6 @@ wxSize wxButton::DoGetBestSize() const
         if (ret.y < defaultSize.y) ret.y = defaultSize.y;
     }
 
-    CacheBestSize(ret);
     return ret;
 }
 
diff --git a/src/gtk1/choice.cpp b/src/gtk1/choice.cpp
index 1488c40ebc..018fa23310 100644
--- a/src/gtk1/choice.cpp
+++ b/src/gtk1/choice.cpp
@@ -541,7 +541,6 @@ wxSize wxChoice::DoGetBestSize() const
     if (ret.y <= 18)
         ret.y = 8 + GetCharHeight();
 
-    CacheBestSize(ret);
     return ret;
 }
 
diff --git a/src/gtk1/combobox.cpp b/src/gtk1/combobox.cpp
index d125ba6be8..cffc1d99c5 100644
--- a/src/gtk1/combobox.cpp
+++ b/src/gtk1/combobox.cpp
@@ -895,7 +895,6 @@ wxSize wxComboBox::DoGetBestSize() const
     if ( ret.x < 100 )
         ret.x = 100;
 
-    CacheBestSize(ret);
     return ret;
 }
 
diff --git a/src/gtk1/control.cpp b/src/gtk1/control.cpp
index 6fdfb48980..d533d86efb 100644
--- a/src/gtk1/control.cpp
+++ b/src/gtk1/control.cpp
@@ -64,9 +64,7 @@ wxSize wxControl::DoGetBestSize() const
     (* GTK_WIDGET_CLASS( GTK_OBJECT_GET_CLASS(m_widget) )->size_request )
         (m_widget, &req );
 
-    wxSize best(req.width, req.height);
-    CacheBestSize(best);
-    return best;
+    return wxSize(req.width, req.height);
 }
 
 
diff --git a/src/gtk1/gauge.cpp b/src/gtk1/gauge.cpp
index b4d3ce1d73..8ce9c26efc 100644
--- a/src/gtk1/gauge.cpp
+++ b/src/gtk1/gauge.cpp
@@ -70,7 +70,6 @@ wxSize wxGauge::DoGetBestSize() const
         best = wxSize(28, 100);
     else
         best = wxSize(100, 28);
-    CacheBestSize(best);
     return best;
 }
 
diff --git a/src/gtk1/listbox.cpp b/src/gtk1/listbox.cpp
index 316bed1321..0bc35bc65d 100644
--- a/src/gtk1/listbox.cpp
+++ b/src/gtk1/listbox.cpp
@@ -1102,9 +1102,7 @@ wxSize wxListBox::DoGetBestSize() const
     // make it too small neither
     lbHeight = (cy+4) * wxMin(wxMax(GetCount(), 3), 10);
 
-    wxSize best(lbWidth, lbHeight);
-    CacheBestSize(best);
-    return best;
+    return wxSize(lbWidth, lbHeight);
 }
 
 void wxListBox::FixUpMouseEvent(GtkWidget *widget, wxCoord& x, wxCoord& y)
diff --git a/src/gtk1/spinbutt.cpp b/src/gtk1/spinbutt.cpp
index 85e2083759..f6284dda64 100644
--- a/src/gtk1/spinbutt.cpp
+++ b/src/gtk1/spinbutt.cpp
@@ -221,9 +221,7 @@ bool wxSpinButton::IsOwnGtkWindow( GdkWindow *window )
 
 wxSize wxSpinButton::DoGetBestSize() const
 {
-    wxSize best(15, 26); // FIXME
-    CacheBestSize(best);
-    return best;
+    return wxSize(15, 26); // FIXME
 }
 
 // static
diff --git a/src/gtk1/spinctrl.cpp b/src/gtk1/spinctrl.cpp
index eee5eaf029..d462dbe0ca 100644
--- a/src/gtk1/spinctrl.cpp
+++ b/src/gtk1/spinctrl.cpp
@@ -330,10 +330,7 @@ bool wxSpinCtrl::IsOwnGtkWindow( GdkWindow *window )
 
 wxSize wxSpinCtrl::DoGetBestSize() const
 {
-    wxSize ret( wxControl::DoGetBestSize() );
-    wxSize best(95, ret.y);
-    CacheBestSize(best);
-    return best;
+    return wxSize(95, wxControl::DoGetBestSize().y);
 }
 
 bool wxSpinCtrl::SetBase(int base)
diff --git a/src/gtk1/textctrl.cpp b/src/gtk1/textctrl.cpp
index 5267495b2f..fbce6fc20e 100644
--- a/src/gtk1/textctrl.cpp
+++ b/src/gtk1/textctrl.cpp
@@ -1255,10 +1255,7 @@ void wxTextCtrl::OnInternalIdle()
 wxSize wxTextCtrl::DoGetBestSize() const
 {
     // FIXME should be different for multi-line controls...
-    wxSize ret( wxControl::DoGetBestSize() );
-    wxSize best(80, ret.y);
-    CacheBestSize(best);
-    return best;
+    return wxSize(80, wxControl::DoGetBestSize().y);
 }
 
 // ----------------------------------------------------------------------------
diff --git a/src/gtk1/tglbtn.cpp b/src/gtk1/tglbtn.cpp
index 73580a2974..f173f1a462 100644
--- a/src/gtk1/tglbtn.cpp
+++ b/src/gtk1/tglbtn.cpp
@@ -208,7 +208,6 @@ wxSize wxToggleBitmapButton::DoGetBestSize() const
         best.x = m_bitmap.GetWidth()+border;
         best.y = m_bitmap.GetHeight()+border;
     }
-    CacheBestSize(best);
     return best;
 }
 
@@ -348,7 +347,6 @@ wxSize wxToggleButton::DoGetBestSize() const
         if (ret.x < 80) ret.x = 80;
     }
 
-    CacheBestSize(ret);
     return ret;
 }
 
diff --git a/src/msw/bmpcbox.cpp b/src/msw/bmpcbox.cpp
index 124b9b78f1..0b33efd5d2 100644
--- a/src/msw/bmpcbox.cpp
+++ b/src/msw/bmpcbox.cpp
@@ -226,10 +226,7 @@ wxSize wxBitmapComboBox::DoGetBestSize() const
 
     wxCoord useHeightBitmap = EDIT_HEIGHT_FROM_CHAR_HEIGHT(bitmapSize.y);
     if ( best.y < useHeightBitmap )
-    {
         best.y = useHeightBitmap;
-        CacheBestSize(best);
-    }
     return best;
 }
 
diff --git a/src/msw/calctrl.cpp b/src/msw/calctrl.cpp
index 8b6f359fa5..2567cc59d0 100644
--- a/src/msw/calctrl.cpp
+++ b/src/msw/calctrl.cpp
@@ -173,9 +173,7 @@ wxSize wxCalendarCtrl::DoGetBestSize() const
         return wxCalendarCtrlBase::DoGetBestSize();
     }
 
-    const wxSize best = wxRectFromRECT(rc).GetSize() + GetWindowBorderSize();
-    CacheBestSize(best);
-    return best;
+    return wxRectFromRECT(rc).GetSize() + GetWindowBorderSize();
 }
 
 wxCalendarHitTestResult
diff --git a/src/msw/checkbox.cpp b/src/msw/checkbox.cpp
index 05a7ccd500..8fa7609571 100644
--- a/src/msw/checkbox.cpp
+++ b/src/msw/checkbox.cpp
@@ -174,9 +174,7 @@ wxSize wxCheckBox::DoGetBestClientSize() const
         hCheckbox = s_checkSize;
     }
 
-    wxSize best(wCheckbox, hCheckbox);
-    CacheBestSize(best);
-    return best;
+    return wxSize(wCheckbox, hCheckbox);
 }
 
 // ----------------------------------------------------------------------------
diff --git a/src/msw/checklst.cpp b/src/msw/checklst.cpp
index bd9efd6be4..97f0cec73a 100644
--- a/src/msw/checklst.cpp
+++ b/src/msw/checklst.cpp
@@ -427,7 +427,6 @@ wxSize wxCheckListBox::DoGetBestClientSize() const
     if ( best.y < size.GetHeight() )
         best.y = size.GetHeight();
 
-    CacheBestSize(best);
     return best;
 }
 
diff --git a/src/msw/commandlinkbutton.cpp b/src/msw/commandlinkbutton.cpp
index 653b48be8a..0a79dc289b 100644
--- a/src/msw/commandlinkbutton.cpp
+++ b/src/msw/commandlinkbutton.cpp
@@ -194,8 +194,6 @@ wxSize wxCommandLinkButton::DoGetBestSize() const
     if ( !GetNote().empty() )
         size.y += MAINLABEL_NOTE_MARGIN;
 
-    CacheBestSize(size);
-
     return size;
 }
 
diff --git a/src/msw/radiobox.cpp b/src/msw/radiobox.cpp
index 720925a0bf..0bc13ada81 100644
--- a/src/msw/radiobox.cpp
+++ b/src/msw/radiobox.cpp
@@ -615,9 +615,7 @@ wxSize wxRadioBox::DoGetBestSize() const
         return wxSize(1, 1);
     }
 
-    wxSize best = GetTotalButtonSize(GetMaxButtonSize());
-    CacheBestSize(best);
-    return best;
+    return GetTotalButtonSize(GetMaxButtonSize());
 }
 
 void wxRadioBox::DoSetSize(int x, int y, int width, int height, int sizeFlags)
diff --git a/src/msw/radiobut.cpp b/src/msw/radiobut.cpp
index ab0e84563e..e4c1134024 100644
--- a/src/msw/radiobut.cpp
+++ b/src/msw/radiobut.cpp
@@ -267,9 +267,7 @@ wxSize wxRadioButton::DoGetBestSize() const
         hRadio = s_radioSize;
     }
 
-    wxSize best(wRadio, hRadio);
-    CacheBestSize(best);
-    return best;
+    return wxSize(wRadio, hRadio);
 }
 
 WXDWORD wxRadioButton::MSWGetStyle(long style, WXDWORD *exstyle) const
diff --git a/src/msw/scrolbar.cpp b/src/msw/scrolbar.cpp
index eac7ec6e2c..efb792c020 100644
--- a/src/msw/scrolbar.cpp
+++ b/src/msw/scrolbar.cpp
@@ -215,9 +215,7 @@ wxSize wxScrollBar::DoGetBestSize() const
         h = wxSystemSettings::GetMetric(wxSYS_HSCROLL_Y);
     }
 
-    wxSize best(w, h);
-    CacheBestSize(best);
-    return best;
+    return wxSize(w, h);
 }
 
 WXDWORD wxScrollBar::MSWGetStyle(long style, WXDWORD *exstyle) const
diff --git a/src/msw/statusbar.cpp b/src/msw/statusbar.cpp
index c00698d3da..dac53ece3b 100644
--- a/src/msw/statusbar.cpp
+++ b/src/msw/statusbar.cpp
@@ -497,9 +497,7 @@ wxSize wxStatusBar::DoGetBestSize() const
     int height = GetCharHeight();
     height += 4*borders.vert;
 
-    wxSize best(width, height);
-    CacheBestSize(best);
-    return best;
+    return wxSize(width, height);
 }
 
 void wxStatusBar::DoMoveWindow(int x, int y, int width, int height)
diff --git a/src/msw/toolbar.cpp b/src/msw/toolbar.cpp
index f03386daee..426681571b 100644
--- a/src/msw/toolbar.cpp
+++ b/src/msw/toolbar.cpp
@@ -539,8 +539,6 @@ wxSize wxToolBar::DoGetBestSize() const
         sizeBest.y ++;
     }
 
-    CacheBestSize(sizeBest);
-
     return sizeBest;
 }
 
diff --git a/src/osx/scrolbar_osx.cpp b/src/osx/scrolbar_osx.cpp
index 6eea3d4802..039a33846a 100644
--- a/src/osx/scrolbar_osx.cpp
+++ b/src/osx/scrolbar_osx.cpp
@@ -119,9 +119,7 @@ wxSize wxScrollBar::DoGetBestSize() const
         h = wxSystemSettings::GetMetric(wxSYS_HSCROLL_Y);
     }
 
-    wxSize best(w, h);
-    CacheBestSize(best);
-    return best;
+    return wxSize(w, h);
 }
 
 void wxScrollBar::TriggerScrollEvent( wxEventType scrollEvent )
diff --git a/src/propgrid/propgrid.cpp b/src/propgrid/propgrid.cpp
index 2db7ed4d07..345300e09d 100644
--- a/src/propgrid/propgrid.cpp
+++ b/src/propgrid/propgrid.cpp
@@ -1214,10 +1214,7 @@ wxSize wxPropertyGrid::DoGetBestSize() const
         width += m_pState->GetColumnFitWidth(dc, m_pState->DoGetRoot(), i, true);
     }
 
-    const wxSize sz = wxSize(width, lineHeight*numLines + 40);
-
-    CacheBestSize(sz);
-    return sz;
+    return wxSize(width, lineHeight*numLines + 40);
 }
 
 // -----------------------------------------------------------------------