The "What Happens in Vegas" star rushed through the back entrance of Los Angeles' Kodak Theatre on Friday to prevent running into Jessica, who is currently dating Cameron's ex-boyfriend, singer Justin Timberlake.

The 'A Beautiful Mind' actress - who is married to 'Wimbledon' star Paul Bettany - will feature in a global advertising campaign later this year, and will also participate in a variety of charity events sponsored by the company.

The actress - who lends her voice to Viper, a Kung Fu expert snake in the forthcoming 'Kung Fu Panda' - admitted it was a relief to concentrate on her work and not worry about her appearance.