US ACTOR Molly Ringwald — star of ’80s film Pretty in Pink — has been asked to back Unite’s campaign against Pizza Express before her concert at the firm’s jazz club tomorrow.

Staff at the 430-outlet pizza chain have been losing 8 per cent of all tips paid by card, due to an administration fee imposed by management.

Union members will stage a Pretty in Pink-themed picket tomorrow evening in homage to Ms Ringwald’s most famous Hollywood role.