Rihanna Shows Off Major Booty in Super Revealing Black Swimsuit -- See the Pics!

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Leave it to Rihanna to absolutely slay her swimwear!
The "Work" singer rocked a revealing lace-up black one-piece swimsuit in a recent impromptu photo shoot with a friend, and showed off a lot of derrière.

The 28-year-old artist really seemed to be feeling the look, as she posed for several sultry photos on what appeared to be a pretty eventful wine night!

The plunging neckline of the apparel also allowed RiRi to showcase some of the tattoo work she's had done on her bottom-middle cleavage area.

Looks like Rihanna's all ready for the summer!
Meanwhile, the singer has been doing more experimenting with revealing styles as of late.
Watch the video below to see the see-through green dress she donned in NYC.