Rihanna dresses as Pebbles Flintstones at her niece birthday party

Rihanna at neice birthday.jpg

For her cousin Noella Alstrom's daughter, Majesty first birthday party Rihanna impersonated Pebbles from the Flintstone.

The singer donned a sexy orange and black asymmetrical off-the-shoulder dress with trademark bones in her hair.

One of her friends uploaded a clip of RiRi to Instagram saying: "They call me ratchet Wilma. And this is naughty Pebbles."

The party was themed after popular Hanna-Barbera cartoon The Flintstones, which also has live-action film adaptations.

Rihanna and the -Birthday_girl_.jpg

Rihanna with cousin Noella Alstrom and daughter Majesty at first birthday party