Photos: Keri Hilson On Her 31st Birthday Celebration.

The R&B singer looked gorgeous as she partied with friends, including T-Pain and retired ballplayer Allen Iverson. Keri Hilson was all smiles as she celebrated her 31st birthday at Prive Nightclub in Atlanta on Friday night.

For anyone wondering why Serge Ibaka – the source of Keri’s glow – did not attend the festivities, the OKC Thunder player was too busy working in the field on Friday night.
See more of Keri's birthday photos after the cut.