The creator of a range of 'butt-lifting' underpants wants to help Mischa Barton hide her cellulite.

Andrew Christian boasts his Flashback Pants can lift and flatten any backside, and tuck away any unsightly fat.

After checking out controversial pictures of Barton in a bikini in Australia, which the actress insists were doctored to make her look awful, Christian is convinced she could use his help.

He tells the New York Daily News, "She needs them, with all the cottage cheese cellulite on her ass."

Barton's spokesperson, Lisa Perkins, is adamant someone tampered with the photos, which have appeared in magazines and newspapers and on websites all around the world, to suit their own financial gain.

She previously told the New York Daily News, "Those photos are doctored. I'm not saying she's perfect, nobody is. But they've given a 22-year-old woman the legs and bottom of an 80-year-old."