Britney Spears' ex-husband on Friday celebrated his 30th birthday at Pure Nightclub in Las Vegas, saying he felt "great" about entering his third decade, People.com reported.

With a posse of about 20 friends and attorney Mark Vincent Kaplan, Kevin Federline entered the club and was greeted at his VIP table by ex-girlfriend Shar Jackson, the mother of two of his children.

Federline’s other two children with Spears were in the care of a nanny and bodyguard as the rapper encouraged everyone to have a "good time" at his Vegas birthday bash, People.com reported.

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