Here's Rihanna as Pebbles Flintstone, Proving Kids' Parties Are Really Just For Adults

Rihanna stole the show at her niece Majesty's first birthday party over the weekend. The singer, who was all dressed up as a sexy version of Pebbles Flintstone for the themed bash, seemed to be enjoying the day while dancing with friends and singing to the little birthday girl. Rihanna's BFF Melissa Forde shared a few videos from the event, showing Rihanna in a Jeremy Scott creation with her hair done up in a high ponytail with Pebbles's signature bone. In one of the clips, Rihanna introduces herself as "Thotty Pebbles" while her pal and assistant Jennifer Morales took on the character of "Ratchet Wilma." The party looked like a total blast, from the giant balloons spelling out Majesty's name to the over-the-top cartoon cake — we especially love how they made the Flintstones' characters people of color, a cute detail that we're sure didn't go unnoticed by the birthday girl. Keep reading to see the singer and her crew celebrating in Flintstones fashion.