Kate Upton rubs shoulders with GOP politicians at 21st birthday bash

Kate Upton rang in her 21st birthday this week and a bevy of D.C. lawmakers were among the unlikely guests at her bash. Congressman Kevin McCarthy, GOP whip in the House, boasted about partying it up with the sexy birthday girl, posting a photo of himself with Kate and her uncle, his congressional colleague Rep. Fred Upton. Though most noted for filling out a bikini, the model was more demurely attired in a sleeveless black dress that covered her eye-catching cleavage. "With Congressman Fred Upton and his niece, Kate. We are celebrating Kate's 21st Birthday." The location of the high profile fete wasn't disclosed. The Sports Illustrated cover girl expressed her heartfelt gratitude for the b-day love. "My friends and family are the best!! Thank you everyone for your birthday wishes," she tweeted. McCarthy is a close ally of Upton's uncle, who is a Republican from Michigan. Upton, a 14-term congressman, told FOX News in 2012 that his glamorous niece was a "great gal." "Her dad, my brother, we live in the same town. We do a lot of stuff together ... we're all proud of Kate."