Little Mix were the first ever group to win the "X-Factor" back in 2011. The feisty girl group released their debut album "DNA" in 2012, which was a massive success, they were the first girl group to make it into the U.S. top five with a debut album since the "Pussycat Dolls". The four have gone from strength to strength and "No More Sad Songs" from their most recent album "Glory Days" was another worldwide hit.