Kelly Rowland, Nas and Psy were amongst some of the performers taking part in the weekend's festivities.
Meanwhile, Rumer Willis and boyfriend Jayson Blair were photographed carrying matching bags as they shopped together in California, while Anne Hathaway and Adam Shulman wrapped up against the cold as they were spotted out and about in New York.
Olivia Palermo and boyfriend Johannes Huebl enjoyed time on the island of St. Barts, and Miranda Kerr also looked full of sunshine as she strolled around Los Feliz, Los Angeles.
In the UK, Lawson performed at the Harlequins v London Irish Rugby Match held at Twickenham.
See all of this weekend's pictures in our gallery below.