Britney Spears to Record Duet With Justin Timberlake?

Britney Spears is reportedly gearing up to record a duet with Justin Timberlake.

The pair -- who dated in their teens and split in 2002 -- will be teaming up for a song on the Toxic singer's next album, which is due at the end of the year.

According to the New York Post newspaper, the former couple were supposed to team up for her last album, but Spears -- under the influence of friends including Osama Lutfi and Adnan Ghalib -- missed her recording session with Timbaland at the legendary producer's Virginia Beach studio last August. "She just didn't show up," a source said at the time.

Meanwhile, as she continues to re-build her career, Spears, 26, has regained her fabulous figure thanks to a new calorie-controlled diet and grueling exercise regime.

She tells OK! magazine, "I'm the healthiest I've been all my life.

"My diet has a lot to do with my getting into shape. I have no sugar. I don't eat fruit or even fruit juice because of the sugar. I eat chicken and salmon and rice. I eat avocados. I'll have egg whites for breakfast and sometimes turkey burgers for lunch. I try to do just 1,200 calories a day. It may sound like it's not much, but it's actually a lot of food if you eat the right things."