Singer IU who has until now captured the hearts of her 'uncle fans' with her innocent charm will showcase her 'sexy dance' for the first time ever. IU was recently on set to film the episode of KBS 2TV 'Happy Together 3' scheduled to air on December 22nd, and earned everyone's cheers after displaying a rather provocative dance. Entertainer Boom first�showcased his skills as a DJ to kick off the 'Christmas Party' themed episode shoot, and the cast members requested a sexy dance from IU as the atmosphere on set grew more exciting. IU who has never done so in front of the camera was a bit bashful, but as soon as the music came on, the singer skillfully showcased a sexy body wave dance. Reportedly, her 'uncle fans' such as MC 'G4' along with other guests Jun Hyun Moo and Marcos were highly enthusiastic, and as the three of them aggressively tried to get closer to the singer, it resulted in Jun Hyun Moo hilariously getting smacked by another guest-star. Catch IU's first sexy dance on 'Happy Together' at 11:15PM KST on December 22nd! Source & Image: OSEN = StARCALL is a brand new K-Pop application where fans can receive video calls from their favorite stars in real-time, as well as send video messages to the stars. In addition to sending and receiving video messages, you will be able to read news updates from allkpop on your favorite stars, as well as their social network updates, and even leave comments for them on their respective sections. Fans have already left thousands of comments for the stars to read, as well receiving and sending many video messages to each other. The application is available for free download on both the Android and iOS platforms, so what are you waiting for? Click below, or search for "StARCALL" on either the iTunes or Android Marketplace to download it and start receiving video calls from your favorite K-Pop stars!