Kevin Federline leaves Britney Spears at home!

Kevin Federline's second son with Britney Spears was born just three weeks ago, but already the aspiring rapper is back to his old bad-boy ways - leaving his wife and babies at home in Malibu to party up a storm in Las Vegas writes PageSix.com.

Federline and a crew of his boys took a private jet to the Venetian hotel-casino Friday night for the weekend-long celebration of the one-year anniversary of the club Tao.

"He booked a table at Tao for both nights," said our source. "He was surrounded by women, was drinking a lot and dancing on the banquette. Every time one of the girls tried to take a picture, he freaked out and wouldn't let them."

In other news, a photographer has accused Kevin Federline's bodyguard of pushing her camera into her nose and face, leaving her "in pain for three or four days".

Snapper Jillian Spaulding was trying to take a picture of Britney Spears' aspiring rapper husband outside Tao nightclub in Las Vegas, Nevada on Friday.

When Federline refused to strike a pose, his protector reportedly said: "'Oh no you don't", to Spaulding before shoving her camera away into her face.

Spaulding tells website CelebrityWeek.com: "I have really been in pain for three or four days now. I had to go back there again the next night and I was going to wear a football helmet."