• GWEN VS. RIHANNA  photo | Gwen Stefani, Rihanna

Credit: LuMarPhoto/AFF-USA; Guido Ohlenbostel/Startraks

Published: Wednesday May 01, 2013 16:00 PM EDT

2013

GWEN VS. RIHANNA

It appears that there is a uniform for international singing superstars with rock-hard abs: this white Balmain crop top and a pair of leather trousers. The main difference between Gwen and Rihanna's ensembles? The voluminousness of their Balmain bottoms.