The stars gathered in New York City's Financial District alongside singer/actor Donnie Wahlberg and his wife, model-turned-media personality Jenny MCCarthy, actors Steve Buscemi, John Leguizamo, Kevin Kline, Vincent Pastore and AnnaLynne MCCord, and former Miss Universe Olivia Culpo to work as stockbrokers for the Cantor Fitzgerald and BGC Partners' event, which raises money for various charities to commemorate the victims of the 2001 terrorist attacks in the U.S.

The 9/11 Charity Day traditionally takes place in both the Big Apple and London, where this year's (15) participants included Samuel L. Jackson, Sir Ben Kingsley, Tom Hardy, Game of Thrones beauty Emilia Clarke and veteran British actress Joanna Lumley.

Australian singer/actress Holly Candy, pop star Mollie King and her model beau David Gandy also hit the trading floor at London's Square Mile on Friday morning to field calls from international clients.

Bosses of investment banking giant Cantor Fitzgerald launched the annual event in the aftermath of the 9/11 atrocity after its corporate headquarters at Manhattan's World Trade Center was destroyed in the attacks, which claimed the lives of more than two-thirds of the company's workforce.