Today's Sexy Stamp: Kate Moss
Speaking to the new issue of Grazia magazine, she said: "Kate has always been herself. She's got an amazing personality and, of course, it's what she looks like but it's also who she is. She just radiates life, lust, sex and everything...''
Sadie and Kate are so close, the brunette regularly raids her pal's wardrobe for designer items.
She said: "She doesn't borrow any of my clothes, but I borrow hers. She's incredibly generous."
Earlier this year, Sadie and her ex-husband Jude Law's son Rafferty, 17, made his modelling debut for DKNY and though she is proud of what he achieved, the Shopping actress doesn't want him to get "distracted" from his school work.
The Bram Stoker's Dracula star - who also has son Finlay, 24, with first husband Gary Kemp, and Iris, 14, and Rudy, 12, with Jude -said: "He's doing his A-levels and he's in a band called Dirty Harrys."
"I didn't watch the show. I'm more proud that he does his homework. They've got opportunities but you have to be careful. It can be too distracting. I grew up acting and modelling and you don't get the education you should."
