Crystal Harris' wedding dress, worn during her New Year's Eve nuptials with Playboy founder Hugh Hefner, is ready to hit the auction block for charity.
"I am auctioning my wedding dress with @charitybuzz to help raise money for lymphoma in memory of Mary," the Playmate tweeted Thursday.
Mary is, of course, Hef's secretary Mary O'Connor, who passed away in January. She was a great friend (and "Mansion Mom") to the girls for 40 years.
According to Crystal Harris, Mary even played a key role in their reconciliation after she went all Runaway Bride on him during their first wedding attempt.