A memo must have been sent out to hairstylists worldwide that the side sweep is making a comeback. Not seen in its full glory since the 70s, Blake Lively, Jemima Kirke, Phoebe Collings-James and pals have spent the last seven days finding the perfect off-centre parting and flicking their locks to the left (and right, in some cases). Curious about who’s a lefty and who’s a righty? Scroll on…