• GWEN VS. RIHANNA  photo | Gwen Stefani, Rihanna

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

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



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.

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