Britney Spears Puts Bikini Bodies Everywhere To Shame On The Cover Of Shape Magazine

Britney Spears' abs are ON ANOTHER LEVEL in Shape magazine. 
Wanna know what we use for gym motivation? Oh, just Britney Spears' "I'm A Slave 4 U" video where she's sweating profusely and twerking her rock-hard abs. Wanna know what we're using NOW for going-to-the-gym motivation? Oh, just Britney's new June Shape magazine cover where her "Slave"-caliber abs are on full display. Only this is