Heidi Montag in a Bikini in Las Vegas

Heidi Montag shows off her new beach body in a self-designed bikini as she hosts the grand opening of the Liquid Pool Lounge at the Aria Resort and Casino in Las Vegas. It is the first time the "The Hills" star and singer has been photographed in a bikini since undergoing 10 cosmetic procedures in one day late last year. The 23-year-old star underwent a mini brow lift, Botox in her brow and frownline area; a nose job revision; fat injections in cheeks, nasolabial folds and lips; chin reduction; neck liposuction; had her ears pinned back; a breast augmentation revision; liposuction on her waist, hips and inner and outer thighs; and a buttock augmentation.