The iHeartRadio Music Festival was held this past weekend, and a whole bunch of celebrity babes from the music world and Hollywood attended the shindig, but believe it or not, it was Hilary Duff who stole the show with one hell of a drool-inducing display of her sexy braless cleavage… sweet Christmas! Totally freaking rocking, eh? At that goes for her sexy leg show as well. And the rest of the attendees put on a drool-inducing show of sexiness as well, so enjoy, and check out the rest of the sizzling photos after the jump!