Changing Calendar size in Navigation Pane

For an reason unknown to me my little calendar at the top of the Navigation Pane in Outlook has doubled, maybe tripled in size. Does anyone have any suggestions how I might restore it to it’s original small size? Nothing else has changed in the Pane but that.

You can change the font size (and even the font type) for the Date Navigator by going to;

• Outlook 2007 and previous
  Tools-> Options…-> tab Other-> button Advanced Options…-> by Date Navigator click the Font… button
• Outlook 2010
  File-> section Options-> section Calendar-> option group: Display options-> button Font…

Custom styled Date Navigator in Outlook 2007