Kevin Federline to be a Dad for Fifth Time!

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K-Fed's back on daddy duty!

Kevin Federline (a.k.a Britney Spears' ex-husband) is going to be a father for the fifth time: His girlfriend, Victoria Prince, is pregnant with her first child, a source confirms to

A rep for Federline, 33, had no comment.

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E! News was first to report the couple's baby news, noting that Prince is about five months along.

Federline divorced Spears, 29, in 2007, and they share sons Sean, 5, and Jayden, 4. The former dancer also has two kids with ex Shar Jackson: daughter Kori, 8, and son Kaleb, 6.

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Although Spears and Federline's split and ensuing custody battle were epically messy, the former spouses have become more amicable of late: Spears, her beau of nearly 2 years Jason Trawick, Federline and Prince have all co-attended recent Little League games to cheer on little Sean.

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No word yet from Spears herself, who's busy promoting her brand-new album Femme Fatale, out Tuesday. (Check out her live performance here.)

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