You're on vacation, Rihanna! That means you're not supposed to be twerking! LOLz!
The Bad Girl was def not thinking about a family friendly animated avatar as she stretched and posed her bikini clad form by the pool in Greece.
Ch-ch-check out the pics (below) to see RiRi Stay in some pretty impressive positions- especially considering the bare knees!
Your move, Miley Cyrus!
[Image via Instagram.]