Awwww! Jessica Chastain receives her Oscar call at Armani Prive show

Jessica Chastain spent the last twelve months exploding onto our radars with an array of fabulous fashion and even more fabulous onscreen performances but we reckon this might be the moment she knows she's made it as an A-lister - receiving the phonecall that she's up for an Oscar (Best Supporting Actress in The Help, FYI) while taking in the Armani Privé couture show and sitting next to... is that Cameron Diaz?!