In Los Angeles, Cory Monteith arrived at the Staples Centre to watch the LA Lakers. The Glee star signed autographs and posed for pictures with fans before entering the venue. Meanwhile, John Travolta and Kelly Preston attended the 10th Annual Living Legends of Aviation Awards at the Beverly Hilton Hotel, while Mark Wahlberg looked relaxed as he filmed at the Grove.
James Purefoy and Kevin Bacon posed for photographs at the New York premiere of The Following, while Imogen Poots and Zac Efron wrapped up as they shot scenes for their new movie Are We Officially Dating in Manhattan.
In London, the snow didn't stop Alexandra Burke enjoying a night out at Aura, Jenni Falconer attended the Mother & Baby Big Heart Awards and Dame Helen Mirren was present for the screening of L'Atalante at the BFI Southbank.
Elsewhere, Halle Berry and Olivier Martinez shopped on Abbot Kinney in Venice Beach, Daniel Radcliffe was seen out and about during the Sundance Film Festival and Kelly Rowland was in good spirits as she left her hotel in Manhattan.
See all today's pictures in our gallery below.