Heidi Montag, reality show star turned plastic surgery spectacle, has gone under the knife again -- this time, for medical reasons. The 27-year-old former "Hills" star reportedly underwent a breast reduction that decreased her bra size from an "F" to a "D." Montag filmed her surgery for "Entertainment Tonight." Host Brooke Anderson posted a photo of herself and Montag on her Twitter Thursday, writing: "We r in the OR w/@HeidiMontag tn on @ETonlineAlert as she downsizes from F breasts to D for...

Eyes up here, boys! Heidi Montag has never been shy about showing off her assets and partied in Las Vegas this weekend in a skimpy two-piece pink bikini. Read the whole story: Celeb...