We hadn’t heard of Guishem until this morning, but suddenly we’re desperately wanting an invitation to their presentation during Mercedes Benz Fashion week in New York next month. We fell for these amazing geometric dresses from their Spring 2011 line. Kristen Stewart wore one when she accepted her Spike TV Scream award in October and Kelly Osbourne wore a gorgeous and colorful full-length version to Us Weekly’s Hot Hollywood event in November. Rashida Jones rocked a deep wine version to GQ’s Men of the Year party last year. On the seemingly opposite end of the style spectrum, Stephanie Pratt wore Guishem to Star magazine’s annual Young Hollywood Issue Release Party last year, and Brittany Snow wore the same one to the 2010 Independent Spirit Awards. Looks like Guishem’s Guatemalan-born designer Guillermo Jop can please all manner of celebrity tastes. His first ready-to-wear line was Fall 2009 — can’t wait to see Fall 2011!