Actress Gillian Anderson looked radiant in an elegant white gown as she left her hotel in Paris on Sunday, ahead of the first day of Fashion Week. © Spread Pictures / MEGA Gillian Anderson leaving her hotel before Paris Fashion WeekGillian, who plays Gina, leads the cast. © Spread Pictures / MEGA A vision in whiteSpeaking at a preview screening, Gillian exclusively told HELLO! © Spread Pictures / MEGA Gillian's backless dress turned headsBoth Gillian and Jason told HELLO! © FOX Gillian Anderson and David Duchovny in The X-FilesDirector Marianne Elliott told HELLO!