Kim, who looked radiant in a red Roland Mouret gown, tweeted, "Just left the Marine Corps Ball. Thanks to all of the marines I had the opportunity to meet tonight! Thank you for all that you do!"
Kardashian attended the event with Sgt. Martin Gardner, a member of the event planning committee. According to E! News, he invited Kim months ago, but kept his identity a secret from the public leading up to the festivities.