The "What Now" singer, 26, wears a tiny pink bikini and a blue hat for the cover showing off her toned body, her tattooes and her nipple piercing.
Lui shared a picture of the cover in a tweet Tuesday announcing that the magazine would go on sale Wednesday.
Other pictures from the singer's shoot with the mag find her floating topless in a pool and others highlight her backside.
Rihanna has previously posed nude for GQ in November 2012, British GQ in October 2013 and V magazine in February 2013.
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