The 23-year-old One Direction star and the 18-year-old singer were spotted getting cosy at the bash which took place at London’s Libertine club.
Louis and Lauren were seen getting a taxi together at 3:15am after the party and were saddled up close to one another in the back of the car.
The pop stars are both a product of ‘The X Factor’ and share a manager in music mogul Simon Cowell.
Meanwhile, Louis’ bandmate Niall Horan had fun at the ‘BGT’ bash with his friend, Little Mix’s Jade Thirwell.
The ‘Steal My Girl’ hitmaker and the 22-year-old singer hit the dancefloor together and, according to the Daily Star newspaper, enjoyed an impromptu karaoke session later on, with Niall and Jade each singing songs by one another’s groups.
The One Direction boys – Louis, Niall, Harry Styles and Liam Payne – are currently enjoying a short break from their ‘On the Road Again Tour’.
The boys have endured a tough couple of months following Zayn Malik‘s shock departure in March and are set to hit the road again on June 5 with their next concert taking place at illennium Stadium in Cardiff, Wales.
