Reese Witherspoon and Kiefer Sutherland brought a touch of Hollywood glamour to London's Leister Square for the UK premiere of 'Monsters vs Aliens'.

But they are just a handful of stars involved in Dreamworks' latest animated outing. Seth Rogan, Hugh Laurie, Paul Rudd and Renee Zellweger also provided voices for the various characters.

The film hits cinemas nationwide on April 3 and fans of this genre - adults and children alike - can expect top sci-fi action and some crude humour.