The great, the good and the glamorous of Hollywood have descended en masse on the 70th annual Venice Film Festival.

The milestone event sawthe event's golden couple, Sandra Bullock and George Clooney, effortlessly charm fans and critics to promote their upcoming film, Gravity. Scarlett Johansson, promoting her surreal science-fiction vehicle, Under the Skin, stole the show in a Versace gown complete with a giant diamond engagement ring. Daniel Radcliffe was mobbed by fans while other stars such as Dakota Fanning, James Franco and Judi Dench also managed to snap up pictures with their fans before heading to their film premieres.