She’s a model citizen.

Cindy Crawford helped raise funds at Cantor Fitzgerald’s annual Sept. 11 Charity Day, working the phones and taking orders for trades, with proceeds going to the firm’s disaster-relief foundation and other causes.

“I said ‘a billion’ more than once,” she was heard telling employees. “And ‘a billion pesos’ once.”

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NEW YORK, NEW YORK - SEPTEMBER 11: Cindy Crawford attends the Annual Charity Day Hosted By Cantor Fitzgerald, BGC and GFI on September 11, 2019 in New York City. (Photo by Eugene Gologursky/Getty Images for Cantor Fitzgerald)

Cindy Crawford attends the Annual Charity Day Hosted By Cantor Fitzgerald, BGC and GFI on Sept. 11, 2019 in New York City. The company lost 658 employees in the 9/11 terror attacks in 2001. (Getty)

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The supermodel was also heard saying on the phone, “It’s fun. I am trying to learn [how to trade], but it’s very over my head right now.”

Crawford, Dr. Ruth WestheimerTony Blair, Walt Frazier, Billy Crudup, Coco Rocha and other VIPs helped raise money for their chosen charities. Prince Harry and Kit Harington participated in the London companion event.

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On 9/11, 658 Cantor Fitzgerald staffers were killed.

This article originally appeared in Page Six.