Gilt Groupe is helping Threadless celebrate their 10th anniversary by having a sample sale of best-sellers. The Sale starts today — Tuesday, May 4, 2010 at 9am PST! The bad news? The sale is only for men’s and boys’ styles! Boo Gilt Groupe, boo!

You need an invitation code to shop at Gilt Groupe, get one here.

Other Upcoming Gilt Groupe Sales:

• K-Swiss @ Gilt Man – ends May 4
• Seven for All Mankind @ Gilt Groupe – May 6