Slow Hands Niall Horan
Take That's Gary Barlow, Kelly Rowland and N-Dubz's Tulisa Contostavlos joined Louis Walsh and presenters Olly Murs and Caroline Flack at the LG Arena this afternoon (June 1st).
Tulisa was the talk of the auditions as she sported a black, lip printed jumpsuit, red shoes and matching ruby red lips.
It was a far cry from her day job attire which normally consists of jeans and baseball caps.
Rowland also proved she was out to make a statement in a tiny yellow crop top and short black skirt.
Head to Capital's picture gallery for more X Factor madness.
Meanwhile, Louis Walsh has hailed all the new judges following the departure of Simon Cowell, Cheryl Cole and Dannii Minogue.
'Gary's been there and done it so he's going to bring an awful lot to the panel,' he told Capital ahead of the auditions.
'I'm dying to meet Kelly Rowland, she's come from one of the biggest bands in the world and this girl Tulisa, I hear I'm going to fight with her so bring it on,' he added.