Kriss

This is driving me crazy. I am trying to find the name of this female artist so that I can buy her album. She has a song out right now and the only lyrics I think I know are part of the chorus "I'm sorry, so sorry". It might be categorized as an alternative rock song, I heard it on a top40 station once, the artist may be European, her name is only 3 letters long. It's a haunting song, kind of sounds like the background vocals are sung in a church and then it has this almost dance beat added. The song was played in the background of an episode of the tv show Las Vegas (on NBC) that I just saw last night. The artist's voice sounds kind of like Dido but it's not. What is the artist's name??! Help!