Oops, sorry, forgot to mention... it's the Assos FI Lady Half Shorts. $130 +$15 shipping for a pair of Assos shorts seems like a pretty good deal (tt would be even cheaper than the Specialized shorts I'm so fond of.)
Those Assos shorts NEVER seem to go on sale in the U.S. and even if some catalog company sends me a coupon, it always says in the fine print: "Not valid on Assos..."
According to Assos' size chart, the shorts are measured by the hip:
http://www.assos.com/en/sizechart/default_inches.aspx
My hips are 34" so it would seem an XS would be right. However, since hearing so many gals talk about "ordering a size up" now I'm a bit unsure. Even if it fits in the hip, does the waist pinch in?
EDIT: Here's the site:
http://www.sigmasport.co.uk/store/assos/lady.html
Check out the model in the bibknickers... she's so thin her hip bones are jutting out. Gross!