Pixie Lott rocks a red mini as she performs at Sainsbury’s Super Saturday Festival in London on Saturday afternoon (September 10).

The 20-year-old musician is currently celebrating a number one record with her new single “All About Tonight.”

Along with boyfriend Oliver Cheshire and a few other friends and family, Pixie headed out Sunday night to celebrate. The group stopped at Bougi’s for dinner then went on for a few celebratory drinks and fun at Whiskey Mint and Riding Horse Cafe.

Pixie thanked her fans on Twitter, “thank you so much to the cats who helped ‘all about tonight’ reach #1! i am the happiest girl in the world because of you ♥ Stil [sic] cant believe ‘All About Tonight’ was number 1! You cats are the bestest. Couldnt ask for more, happiest girl in the world today! agaga!xx”

15+ pics inside of Pixie and Oliver…