Hey hun...I have many pairs of Bebe shoes I have purchased over the years, so I thought I'd add my thoughts...
I have a pretty big, narrow foot (size 10M or 10 1/2M US if they run small in other brands) and size 10M in bebe shoes is cutting it pretty close fit wise. That's as high as they go in size that I've ever seen.
Most styles they have work just fine, but..for example, I got the cutest open toe platform heels in woven material with black patent trim (almost kind of raffia looking?) for summer and love them, but they have no give (unlike leather) so they are killer painful after a few hours. But I have many leather, or satin heels from them that wear very comfortably usually from the first wearing.
If you don't have relatively narrow feet, you might be unhappy with the fit. Just like their clothes, they are cut pretty small/narrow!
HTH!!