America's sweetheart, the actress Sandra Bullock, is being dragged into an unpleasant legal battle to prove that she is a better parent than her husband’s former wife, the star of more than 100 pornographic movies, the Times of London reported.

Bullock is backing claims by her husband Jesse James, the television celebrity, that they have made a good home for Sunny, his five-year-old daughter.

His ex-wife Janine Lindemulder, 40, star of such video titles as Mrs Behavin’, Sleeping Booty and Dyke Diner, disagrees. She has just been released from a six-month prison sentence for tax evasion.

When she was in jail in Oregon she reportedly sent her former husband a bitter text message that read: “U win. Sandra finally has her baby — congratulations.”

The tattooed blonde remains in a halfway house in Los Angeles until the end of this year when she can seek custody of her daughter.