Rep. Kevin McCarthy, R-Calif., posts shot of himself and Kate Upton Kate Upton arrives on the red carpet before the screening of the film "On The Road" during the 65th annual Cannes International Film Festival in Cannes, France on May 23, 2012. NEW YORK, June 11 (UPI) -- Supermodel Kate Upton's 21st birthday party became public when a Republican leader in the U.S. House posted a snapshot online. Rep. Kevin McCarthy of California, the Republican whip, posed with the birthday girl and her uncle, Rep. Fred Upton, R-Mich., in the shot he put on Instagram, the New York Daily News reported. The location of the party was not revealed. Upton, who appeared in a bikini on the cover of Sports Illustrated in January, was wearing a sleeveless black dress that showed no cleavage. Upton's 21st birthday was Monday. She sent out thanks via Twitter: "My friends and family are the best!! Thank you everyone for your birthday wishes. Her uncle told Fox News in 2012 Upton is a "great gal."