Jean Dujardin, Ryan Reynolds, Pixie Lott: Celeb pictures February 1

Today's celebrity pictures include The Artist's Jean Dujardin and Uggie the dog receiving a commendation from the city of Los Angeles for the aforementioned Oscar-nominated silent movie, a heavily pregnant Hilary Duff checks herself in at a health centre, and Kim Kardashian runs errands in LA.

Meanwhile, Jennifer Lopez and toyboy Casper Smart continue to look busy in the Big Apple, a glamorous Naomi Watts goes to a celebrity bash in Sydney, and Hollywood hunk Ryan Reynolds attends a photocall in Madrid for new film Safe House.

In Paris, Hollywood actress Katherine Heigl heads to the One For The Money premiere; and in London Pixie Lott leaves the Maida Vale BBC Studios after a live performance, and This Means War actress Reese Witherspoon enjoys a night out in the capital at The Arts Club.