No, please! let not her cosplay for a music festival as well! It bothers me to no end the endless parade of celebs dressing up for Coachella... it's not a fashion show, it's a music festival!!
^But it would seem that she doesn´t have a contractual obligation to dress differently irl (same with other actresses like Mila Kunis). As long as they look put together on the rc where they´re the "big names" and not the "persons", I think that´s enough for the brands... otherwise they wouldn´t hire celebs like Kristen.