The reality TV star jetted over to London to spend some time with UK-raised performer Rita Ora.
And both stars stepped out together to enjoy a night of partying at Mahiki on Tuesday night.
Spotted: Rob Kardashian has flown to London, where he was seen out partying with rumoured girlfriend Rita Ora
Rob stepped out wearing a daring outfit as he turned up to the nightclub.
Forgotten your stylist? The reality TV star stepped out in an odd ensemble consisting of brown trousers, coloured top, denim shirt and bomber jacket
He'd clearly left his stylist in the States as he worked the London social scene, topping off his ensemble with a black baseball cap.
But his date for the evening managed to work a quirky look while still appearing trendy and stylish.
Rising star: The UK-raised performer is signed to Jay-Z's Roc Nation and is readying the release of her first official single
Showing off her bleach blonde locks, she walked out of Mahiki with a grey hoody over her head.
And she vamped the outfit up with a black leather jacket and matching gloves.
Dressing the look up, the singer tottered on a pair of black Louboutin heels with the red soles in full show.
On holiday: Kim, Khloe and Kourtney's brother is on vacation in London and is making the most of his free time
While Rob is better known, Rita's star is slowly rising higher.
She first rose to fame by singing on Craig David's Awkward and she recently flew to New York to play her first official single alongside Jay-Z at NYC station Z100.
She posted a couple of pictures of her in the studio next to the 99 Problems hitmaker as she was unveiled to the American audience.
And having only just returned to Britain it's possible she may have brought Rob back with her.
Rita is set to release the single on 6th May and will be touring with DJ Fresh throughout Britain later this year.