Kate Hudson “Is Pissed” Cameron Diaz Is Dating A-Rod: Source

 

Catfight!

The new issue of Us Weekly reports that Kate Hudson and Cameron Diaz are locked in a bitter battle over Alex Rodriguez. (On May 2, Diaz was spotted leaving A-Rod's $30,000-a-month penthouse with overnight bags; Hudson dated the Yankees slugger from May to December of last year.)

PHOTOS: Undercover lovers!

An insider believes Diaz is bedding Rodriguez as a form of retaliation after Hudson hooked up with Justin Timberlake in January 2007 — just two days after the couple of four years split.

"Kate thinks it's payback, pure and simple," the insider says. And Hudson's not 100 percent wrong. Says a Diaz pal, "Cameron was actually in a serious long-term relationship with Justin. She thinks it's a joke Kate would be mad. Kate is only upset because she hates being single."

PHOTOS: Shocking star splits

In an effort to hold on to Rodriguez, one source even contends that Hudson (who has a son, Ryder, 6, with ex-hubby Chris Robinson) got breast implants postsplit to appeal to the Yankee's preference for "busty women."

PHOTOS: How Kate has flaunted her new boobs

For more details about Hudson and Diaz's fiery feud — including their fight for the same roles ("Kate thinks Cameron is an aging old lady actress struggling to remain sexy and relevant," a source says), how Kate gets "crazy jealous" of the men she dates and why A-Rod reminds Cameron of her dad, pick up the new issue of Us Weekly, on stands now.

Sign up now for the Us Weekly newsletter to get breaking celebrity news, hot pics and more delivered straight to your inbox!

Want stories like these delivered straight to your phone? Download the Us Weekly iPhone app now!