title: Microsoft Ribbon for WPF, RibbonButton LargeImage only
body: <p>if the RibbonButton contains no Label there is a lot of free space under the LargeImage icon. Instead of using a text, i would like to enlarge the image (width and height).
  However, i didn't found a solution to do that.</p>
  
  <p>The only thing i found out is to configure a margin in order to place the Image in the center, but I want the image to be streched to fit the whole region.</p>
  
  <p>Any comments on that?</p>