Justin Bieber fever hits dramatic 'X Factor' showdown

The evening also featured a performance by 16-year-old Justin Bieber who afterwards cheekily flirted with Cheryl Cole

"I want to say hello to Cheryl Cole, hello," he said, waving at her and raising his eyebrows, before making a 'call me' gesture with his hand

He later took to Twitter posting this message: "Cheryl u looked lovely as usual"