Porsha Williams knows how to party and look fantastic while doing it! The Real Housewives of Atlanta star took to Instagram to share an eye-catching photo of herself celebrating her 39th birthday with her friend Shamea Morton on a yacht. In the pic, she is standing on the boat while wearing a flattering purple, turquoise, white and black swimsuit that was zipped down enough to help her show off a sexy plunging neckline and Shamea is wearing her own eye-catching multi-colored striped bikini.