Posted by babu 1:44pm GMT
KIIS FM's Jingle Ball 2010 concert took place in Los Angeles last night and, while most celebs in attendance took the casual-chic (or, in Hayley Williams' case, eek) route, Katy Perry popped in a plum-colored Zuhair Murad sheath with paisley-print lace overlay.
Other celebs in attendance included Victoria Justice (in a navy bodice and leather jacket), former "Bachelorette" Ali Fedotowsky (in a velvet, peach-colored dress with eyelet detailing along the neckline), Selena Gomez (rocking a tie blouse, jeans and scarf combo) and last, but certainly not least, Hayley (who packed on the punk rock in a military sweater, gingham schoolgirl skirt and canvas sneakers).
Which star's Jingle Ball style is your fave?
Photos (left to right): Jason LaVeris/FilmMagic; Jason LaVeris/FilmMagic; Jordan Strauss/WireImage; Jason LaVeris/FilmMagic; Angela Weiss/Getty Images