Jude Law, Katy Perry, Pam St Clement: Celebrity pictures January 20

Today's celebrity pictures see Chelsea stars clash with Essex dwellers as Caggie Dunlop and Millie Mackintosh attend the Walkers 'What's That Flavour' launch party with the latter's Chloe Sims and Joey Essex in London last night (January 19), as fellow TOWIE star Lydia Bright celebrates her 21st birthday at Anaya nightclub.

Meanwhile, Shame stars Carey Mulligan and Michael Fassbender arrive at the 2012 London Critics' Circle Film Awards at the BFI, with Fassbender picking up the 'British Actor Of The Year' award, and the late Pat Butcher's Pam St Clement arrives at a TV studio in Dublin.

In Paris, Jude Law attends the premiere of Sherlock Holmes: A Game of Shadows, an inconspicuous Jared Leto goes to the Hugo Boss show at Berlin Fashion Week, and a colourful Katy Perry continues her 'California Dreams' tour in West Java.

Across the pond, a glamorous Kate Beckinsale arrives for her premiere of Underworld: Awakening in Los Angeles, and Hollywood couple Kevin Bacon and Kyra Sedgwick attend the screening of Man on a Ledge along with Sedgwick's co-star Sam Worthington in New York.