Rihanna twerks her body on her 28th birthday [Watch here]

Rihanna took to Snapchat to share a new video of herself shaking her booty and dancing at the instruction of her gal pal Melissa Forde during her 28th birthday celebration on Saturday at Via Alloro in Beverly Hills, California.

 In the background, Melissa asked the singer to ''spin for me!'' and twerk.

Her birthday celebration comes just a few days after she postponed the start of her Anti tour by two weeks after cancelling her 2016 Grammys performance.

Watch the video HERE