The 'Gossip Girl' ethnics are explained at last! "Originally, the Kati and Isabel characters on GOSSIP GIRL were actually listed in the breakdown as "Rosencrantz and Guildenstern in Jimmy Choos,' writes a tipster who auditioned for the show, but wasn't ultimately cast. "They were actually the funniest part of the show - they had these totally bizarre three line conversations at the end of each scene. Unfortunately, for those of us who went in 19 times for every part on the show and ended up coming down to the very end for those roles, the network decided that they had to go "ethnic," and they claimed couldn't find any black or Asian girls who were funny, so they, at the last minute, cast models and decided to just make them sight gags. No joke."