Happy birthday, Rihanna! Today, Feb. 20, the bad gal turns 28-years-old. On top of ringing in a new year, the superstar has much to celebrate, including her recently released Anti album and ultra successful runway show during NYFW, featuring her latest collaboration with Puma. Needless to say, this is just the beginning for the Barbadian beauty. In honor of her big day, we’re highlighting some of her sexiest Instagram moments. Check them out in the gallery below.