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.
According to a statement from Charity Buzz, Harris' partner in the venture: "Crystal is donating this dress in memory of her good friend, Mary O'Connor."
"Mary was Hugh Hefner's longtime assistant of 40 years, and is credited with helping Crystal reconcile with Hef last year, ultimately leading to their recent wedding."
"Money raised will benefit the Leukemia and Lymphoma Society in Mary's name."
Bids for the 26-year-old Harris' gorgeous strapless, floor-length mermaid-style, soft pink Romona Keveza gown and Aruna Seth shoes will start at $1,000.
The auction is set to end on February 11.