Shunning his winter warmers for a wardrobe more suited to summer, Nick had only his leather biker to rely on when it came to keeping him toasty.
Crazy person, much?
Spotted leaving the Radio 1 studios earlier today, Nick had onlookers a little baffled with his odd wardrobe getup.
It may be feeling like the Arctic right now outside, but the cold didn't seem to bother Grimmers as he made his way through the capital. Baring his legs and wearing a pair of sunnies, Nick was alll smiles as he finished up his radio breakfast show.
Rather you than us, Nick!
Nick's appearance in London comes after X Factor's latest evictee Anton Stephans hit out at him for being on the judging panel.
Things had grown tense between the pair after Nick criticised Anton's performance for being "fake". Insisting he is not putting on an act, Anton grew frustrated by the comments and later slammed Nick once he had been voted out of the show.
Criticising Nick's ability to pass judgement on the show, Anton said: "The other judges have experience with performing or at least nurturing and bringing us worldwide popstars. They don't just play music on the radio and have famous friends."
He added: "Having an opinion doesn't mean you have to hurt people. It doesn't mean that you have to assassinate people's characters. You don't have to be ugly."
Nick, meanwhile, has said he doesn't understand why Anton is trying to create "fake beef".
For exclusive competitions and amazing prizes visit Reveal's Facebook page NOW!