Who needs a photographer when you've got a smartphone? Click through to see the sexiest bikini selfies from Twitter and Instagram courtesy of stars like Kim Kardashian, Rihanna, Mariah Carey, and more
Lea Michele redefined the term "beach bum" when she shared this shot of her toned bikini-clad backside while on vacation in Mexico for the 2014 New Year. "What an amazing week in Mexico...New day. New year," the Glee star captioned the photo.