Actress Angie Harmon is hosting an auction of shoes autographed by celebrities in New York City, ABC News reports Tuesday.

The auction will kick off today through October 2, at Madison Square Park and is for the benefit of KaBOOM!, a nonprofit organization which builds playgrounds.

Celebrities' signs include Harmon, Melissa Joan Hart, Sarah Michelle Gellar and Tori Spelling, the network said.

Harmon has appeared on TV series Law & Order and Women's Murder Club. The actress is married to former New York Giants football player Jason Sehorn.