Jessica Alba and Kim Kardashian both hit up the blonde dye bottles this weekend

Alba’s stylist Robert Ramos amped up the look with blonde extensions for length and drama, though it seems those are strictly for on-set—the dye job is in preparation for her role reprisal in the Sin City sequel. While this transformation marks the first time Alba has dyed her hair in four years, it’s just one of many recent changes for Kardashian. Despite tweeting that she had gone blonde, Kardashian’s signature raven locks look only slightly lightened. Her stylist George Papinoklas explained the dye process to Hollywood Life: “I changed her from her traditional dark brown, to a more fashionable glossy chocolate brown. I softened her natural black hair color to a dark chocolate…then used balayage highlights to add rich chocolate pieces around her face and ends of hair.”