• Justin Bieber attends the 3rd annual Tribeca Disruptive Innovation Awards during the 2012 Tribeca Film Festival at NYU Paulson Auditorium in New York April 27, 2012.

Justin Bieber attends the 3rd annual Tribeca Disruptive Innovation Awards during the 2012 Tribeca Film Festival at NYU Paulson Auditorium in New York April 27, 2012. (Photo : Reuters/Andrew Kelly)

Details about "What Do You Mean?" singer Justin Bieber's threesome activity in London after the Jingle Bell Ball on Dec. 13, Sunday, were recently revealed by British model Laura Carter, 30.

Carter told The Sun on Sunday that Bieber picked her out on a nightclub dance floor after he headlined the Jingle Bell Ball at 02 Arena in London. At the time, she was partying with friends in Tape club when the 21-year-old pop star's security men invited her at his table to join 20 other women.

Like Us on Facebook

According to Carter, Bieber invited her to come to his hotel for a private party. She said she wanted to take a selfie with the Canadian pop star but she was asked to leave her mobile phone in a bucket at the door of the historic Rosewood Hotel.

"I was taken to this huge room which had been kitted out with a massive sounds system and there was booze everywhere," Carter explained. She added that there were 10 other girls and four boys at the party.

Twenty minutes after taking a girl to the bedroom, Bieber came back in his boxer shorts, according to Carter. She said it was at the point Bieber took her hand and led her to a room where another woman in her underwear was lying on the bed.

The three started kissing but the other woman left because she apparently did not like not having enough attention from Bieber, according to Carter.

In other news, a source told Gossip Cop that Bieber has been "casually hooking up" with Kourtney Kardashian, 36. The two were seen at The Nice Guy in Los Angeles and moved to a karaoke club called Blind Dragon on Dec. 11, Friday.