Who: Rihanna
What:RiRi has been accused of using a body double in her underwear campaigns for Armani, so we think she had a point to prove when she tweeted her fragrance ad campaign in Time Square - and then promptly tweeted a photo of herself in a skimpy lace bra top. The Converse baseball boots and Celine bag are a nice touch.
Where: Times Square, New York.