Diva alert!

It doesn't matter if you're young or old, you can still commit fashion crimes!

Chaka Khan hit the stage in fringed leather chaps, denim AND gold crotch jewelry. Whoa! "American Idol" runner-up Jessica Sanchez had hair bigger than her voice.

Plus, Ke$ha went for the embroidered denim look, but didn't quite pull it off. See who else made our list of the worst-dressed celebrities of the week by clicking the "Launch Gallery" button below.