K.Fed Still Superdad!

 Image by Splash News

Kevin Federline packed up his kids on Friday and took them to Las Vegas to celebrate his birthday. His ex-girlfriend Shar Jackson also joined K.Fed for the celebrations.

Friday afternoon they spent the day relaxing in a VIP cabana at Caesars' Venus Pool Club. The official birthday festivities kicked off on Saturday night, when K.Fed and 14 of his closest friends went to Social House for some dinner. "He was talking on the phone and texting the whole time," said a spy. After dinner the group headed to Caesars’ Pure Nightclub.

"As soon as his parents got to the club they immediately went to Shar's table on the other side of the club and hung out there for a while," a source says. "They were taking photos with her and catching up. It's pretty easy to see that they still care about her."

Federline "was clearly having a good time, hanging with his group and singing along to most of the music," says an onlooker.