With Margot Robbie glowing her way down the pink carpets for Barbie, there's one question on everyone's minds: What is the secret behind her incredible skin? Well, it'll set you back a cool $1,600 (£1,242). While she's previously confessed to loving budget buys including Johnson's makeup wipes and nipple balm as lip balm (yes, really), some of Robbie's other favourite skincare must-haves include La Prairie's Caviar Luxe face cream (£450), and ZIIP Beauty's GX Series Nano Current, coming in at £425. Sign up to our new free Indy100 weekly newsletter