Justin, 22, wore head-to-toe white, while Rihanna, 28, looked cute in a denim skirt and jacket that she wore off her shoulders.
The two reportedly didn’t leave the club until around 5 a.m.
Both Rihanna and Justin are in town for their upcoming V Festival performances this weekend.
Earlier in the day, Rihanna rocked an oversized coat while going on a shopping spree with some friends at Harrods department store.
30+ pictures inside of Justin Bieber and Rihanna partying it up in London…