IU and KARA's Nicole made the mistake of not singing during their opening performance at the '2010 SBS Entertainment Awards'. The two girls appeared on stage wearing white wedding dresses, and performed�Madonna's 'Like a Virgin'. However, because they were so focused on their choreography, they forgot to sing the beginning part of the song. Fortunately, it was a pre-recorded number, so it was not very noticeable. Meanwhile, the show experienced another slip-up during the entrance of MCs�Shin Dong Yup, Jang Yoon Jung and Park Sun Young. Audience members felt�an awkward pause because the door that the MCs were to enter from did not open; luckily, the mishap was quickly fixed. After this accident, Shin Dong Yup said, "You guys were laughing, but we were going crazy behind there", drawing laughter from the audience. Source: Newsen