Britney Spears is prepared to fight back against the rapping ex-husband trying to take her boys. The formerly blonde star is digging out the dirt on K-Fed. Britney accuses the Las Vegas lover of partying throughout her pregnancies and trying to sell a sleazy sex tape of the pair.

“It’s not just Kevin’s partying and gambling, there are all sorts of things she thinks lawyers should know about,” a Brit source tells the British rags.

“She may not be Snow White, but she is determined to show he is no knight in shining armour either.”

The case is due to be held at the Los Angeles Superior Court on September 17.