The 'Snow White and the Huntsmen' actress - who is one of the faces of the French fashion house - is very excited about what Raf is going to come up with after replacing John Galliano at the label.
She said: ''Working with the house of Dior is like working with family: they know me and my body so well. I met with Raf Simon in Paris recently and I'm really looking forward to working with him. I'm particularly excited to see his first couture collection in July.''
The Oscar-winning beauty also revealed how she likes to archive her designer dresses once she's worn them as they always bring back special memories.
She told InStyle: ''I have my own archive for them - they're in a temperature controlled room, packaged up properly. I'm not usually sentimental about material things but I do like going in to that room and looking at those dresses and thinking 'wow-I'm a lucky bitch!' I never got to go to my prom - so maybe that's why I love wearing those special dresses so much now!