Britney Spears is commissioning a nude portrait of herself.

The 'Toxic' singer has finally got back in shape following the birth of her second son, Jayden James, and is so proud of her figure she wants it "immortalised" in a painting.

A source told Britain's More magazine: "Britney's been getting in better and better shape since she split with Kevin and wants her body immortalised in a portrait.

"She loves the film 'Titanic', especially the scene where Kate Winslet's character Rose gets painted in the nude. She wants it tastefully done, though, and is looking for the right artist to do it."

Britney - mother to one-year-old Sean Preston and four-month-old Jayden James - filed for divorce from husband Kevin Federline in November.

Since separating from Kevin, Britney, 25, has been spotted out partying on several occasions showing off her body in a variety of skimpy outfits.

She has been pictured four times not wearing any underwear.