Mary Carey, who starred in such films as "Lesbian Big Boob Bangeroo 2," said she decided to replace her 36D implants with larger ones sized at 36DDD," ABC News reported Friday.

As of Thursday afternoon, bidding for Carey's old implants was up to more than $15,000, ABC said.

"I thought the auction would be a great way to spread some holiday cheer and make sure someone out there would have a Mary Mary Christmas," the 27-year-old porn star told ABC.

Carey is giving 20 percent of the auction proceeds to the Susan G. Komen Foundation. The remainder of the money, she says, will be used to help her schizophrenic mother who jumped off a building in 2006 and suffered serious injuries.