AceShowbiz -

Lindsey Vonn had an unexpected guest when attending the Council of Fashion Designers of America (CFDA) Awards. Wearing a white with a plunging neckline, the Olympic ski gold medalist was visited by the U.S. Anti-Doping Agency Monday night, June 3 during the star-studded event at Lincoln Center's Alice Tully Hall in New York.

She got her urine sample taken for a mandatory drug test as part of the International Olympic Committee rules governing Olympic athletes. "Yes, she was tested at CFDA," her rep confirmed to E! News. "That is an understood part of her job." A USADA spokesperson added that the athlete cooperated with "professionalism."

"Lindsey Vonn has participated in the USADA out-of-competition testing pool for more than 12 years," the USADA rep continued. "As part of her participation, she provided USADA with her location information indicating she would be in New York and we performed a test collection on her there. Her sample was collected in accordance with the standard protocols and will be processed by a WADA-accredited laboratory."

"This real-life example demonstrates the commitment of our elite Olympic athletes and the accommodations they make for the inconvenience of drug testing, in order to ensure the ideals of clean sport are upheld," the spokesperson added.

Vonn, 28, injured her right knee in a crash at the Alpine World Championships in Schladming, Austria earlier this year. After recuperating from her injury, the girlfriend of pro golfer Tiger Woods gets back to training for the Sochi, Russia Winter Olympic Games next year.