Katy Perry Serenades Models At Victoria's Secret Fashion Show

Each year, the Victoria's Secret Fashion Show doubles as a party for celebrities and some of the brand's most famous angels and a chance for the lingerie brand to show off its newest — and most gem-studded — styles. This year, models like Adriana Lima, Chanel Iman and Karolina Kurkova strutted down the catwalk as pop stars Katy Perry and Akon serenaded them.

Perry, getting into the spirit of the evening, donned Todd Thomas-designed outfits that looked like lingerie, according to UsMagazine.com. She sang her power anthem "Firework" in a purple leotard-and-bustle combo, then wore a yellow, heart-covered PVC minidress and thigh-high boots for a medley of "Teenage Dream," "Hot N Cold" and "California Gurls."

According to the Wall Street Journal, Akon performed his hit "Angel" with Lima — who was wearing a bra encrusted in Diamiani diamonds and sapphires that's valued at $2 million — by his side.

E! News reports that the celebrities on hand to check out the eye-catching designs included Maxwell, Russell Simmons, Debbie Harry, Malin Akerman, Maroon 5's Adam Levine and Kings of Leon's Jared Followill. Both Levine and Followill are romantically attached to some Angels; Levine dates Anne Vyalitsyna, while Followill is engaged to Lily Aldridge.

Perry was seen on the step and repeat in a flower-petal strapless top and hot pink skirt, which she paired with bright blue shoes. "Backstage @ the Victoria Secret fashion show... I BET y'all would love a few twit pics today :) these ladies r jaw dropping #VSFashionShow!" Perry tweeted before the show. Afterwards she added, "I [heart] NYC!... First time I've heard #FIREWORK!!! On the radio! On KTU!!! GO GO GO"

The Victoria's Secret Fashion Show will air on CBS on November 30.

Are you excited to watch the Victoria's Secret Fashion Show? Let us know in the comments!