The evolution of UK pop phenoms Little Mix, from fledgling X Factor winners to global superstars, has been testament to the unyielding power of their particular brand of neon-laced, chart-obliterating tunes. Because amid the teen-idol costume changes and tabloid-fodder love lives, the UK's biggest girl group are responsible for some serious bangers—anthemic, group-chanting party starters like “Black Magic”, deliciously hook-filled covers like “Word Up!” and cred-laden collabs like “How Ya Doin'?”, which features Missy Elliott.