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She's back at it!

Rihanna's always been known for pushing the envelope but this time she's outdone herself as the 25-year-old posted some sultry pictures of her backside on Instagram. Talk about up close and personal!

The Diamonds songstress is currently in Barbados as she celebrated the Barbados Kadooment Day Parade while offering up different angles of her figure.

What won't RiRi take a picture of?!