You know those stunning hairstyles Emma Stone has been modeling during her global The Amazing Spider-Man 2 press tour? Well, the woman who created them is L’Oréal’s celebrity hairstylist Mara Roszak . She’s also the genius behind all the gorgeous updos and perfectly coiffed waves worn by Zoe Saldana , Lily Collins , Mila Kunis , Olivia Wilde and Kate Mara . For the past ten plus years Mara has been working with most of Hollywood’s It girls on everything from red carpet events to magazine covers. Oh, and by the way, she’s the go-to gal during awards season, especially the Oscars.