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There were several reasons for Rihanna, Jay-Z and Beyonce Knowles to celebrate in London the other night.

Earlier in the evening, the Barbadian singer took to the stage at the Brixton Academy and debuted tracks from her new album, Rated R. Afterward, she launched into some hits from Good Girl Gone Bad
and was joined on stage in a surprise appearance from Jay-Z, who
arrived just in time to perform “Umbrella” with the young singer. As for Beyonce, she had reason to smile as well, having performed a sold-out concert at the O2 arena in London.

The threesome met up at Mahiki with Beyonce letting her hair down, showing off her legs and bright red lipstick. Jay-Z kept it simple in an all-black ensemble, complete with sneakers and sunglasses. While she kept her head shielded from photographers, Rihanna was hard to miss with her signature combed-over blond locks and a bright red, sheer mini-dress.

Sounds like any rumored baggage involved with the threesome was left at home. Or had its own hotel room.

Gallery Info: Rihanna, Beyonce Knowles and Jay-Z celebrate the singer’s Rated R launch and Beyonce’s sold out show at the O2 arena in London at Mahiki in London.