Roger Federer and Lindsay Vonn play tennis on a glacier in the Swiss Alps

Roger Federer and his biggest fan Lindsay Vonn took to the Swiss Alps for a little hit-and-giggle on behalf of Federer's chocolate sponsor, Lindt. The

Courtney Nguyen | Jul 16, 2014

Roger Federer and Lindsay Vonn play tennis on a glacier in the Swiss Alps /

Roger Federer and his biggest fan Lindsay Vonn took to the Swiss Alps for a little hit-and-giggle on behalf of Federer's chocolate sponsor, Lindt.

The groundwork for the publicity stunt was laid down last when Lindt posted a video of Federer and Vonn on a Skype date. Vonn offered her condolensces about the Wimbledon final, while Federer acted as dorky as ever. Then the two agreed -- after an impromptu game of Pictionary -- to meet up on the mountain to play some tennis.

You can watch the video here:

And so they did. Vonn is an unabashed Federer fan, and she looked pretty excited to be up on the Jungfraujoch with her favorite tennis player. Who wouldn't be with that vista?

Tennis, on a glacier, anyone? (REUTERS) pic.twitter.com/GLkntZRI32
— Joe Fleming (@ByJoeFleming) July 16, 2014

Great picture: @lindseyvonn and @rogerfederer play tennis in the Swiss Alps (h/t @nzaccardi) pic.twitter.com/KXgAdj8bRH
— NBC Sports Bet (@NBCSportsBet) July 16, 2014

Lindsey Vonn fires a forehand to Roger Federer (REUTERS) pic.twitter.com/AMRXOcJVyj
— Joe Fleming (@ByJoeFleming) July 16, 2014

Federer has to chase this one down (REUTERS) pic.twitter.com/MCSubJpqhG
— Joe Fleming (@ByJoeFleming) July 16, 2014

Roger Federer and Lindsey Vonn toss Lindt chocolates into the air on the Aletsch Glacier (AP) pic.twitter.com/cnnvVfdH1r
— Joe Fleming (@ByJoeFleming) July 16, 2014

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A post shared by L I N D S E Y • V O N N (@lindseyvonn)

Published Jul 16, 2014

COURTNEY NGUYEN

Contributor, SI.com Nguyen is a freelance writer for SI.com, providing full coverage of professional tennis both on and off the court. Her content has become a must-read for fans and insiders to stay up-to-date with a sport that rarely rests. She has appeared on radio and TV talk shows all over the world and is one of the co-hosts of No Challenges Remaining, a weekly podcast available on iTunes. Nguyen graduated from the University of California, Irvine in 1999 and received a law degree from the University of California, Davis in 2002. She lives in the Bay Area.