CASEY ANTHONY is about to get her butt kicked as 500 women ready to battle monster mom! Biggest matchups! Tale of the tape!

The most hated woman in America has been chal­lenged to a celebrity boxing match by a tattooed tornado who intends to give her the beating of her life.

The ENQUIRER has learned that Michelle “Bombshell” McGee, the gal who wrecked Sandra Bullock’s marriage to Jesse James and has already won two celebrity box­ing matches, is looking forward to wrecking Casey’s face.

“I want THIS match!” a de­termined McGee told The ENQUIRER. “I know she’s lying about killing her daughter Caylee. I want to kick her ass!”

Two-fisted McGee – who has the backing of a successful boxing pro­moter – is just the woman to do it. On her website, she boasts she’s “the world’s most notorious mis­tress.”

And she’s already had easy ring victories over porno queen Gina Lynn and alleged Mel Gibson mistress Violet Kowal, revealed Damon Feldman, the promoter who intends to broadcast the match.

On paper, they appear similar.

Casey is 5-foot-2 and 115 pounds while Michelle stands 5-foot-3 and weighs in at 120.

“But Michelle is tough,” says Feld­man. “She can whip Casey.”

Feldman’s firm, Celebrity Box­ing, has offered the despised mom $10,000 plus another $10,000 for her favorite charity to go three one-minute rounds for a TV special to be taped in Fort Lauderdale on Nov. 3.

Nearly 500 potential opponents applied to get a shot at Casey – including several celebrities the promoter won’t name. “I would pay YOU to fight her!” one woman told Feldman.

Casey has been in hiding since she was released from probation in late August on check fraud charges. But Feldman says he’s already contacted her reps and “now we’re just wait­ing to hear from her.”