MARY-KATE and Ashley Olsen, whom most people know as the diminutive former child stars of Full House and an endless stream of straight-to-video tween movies, are inspecting a rolling rack of crisp white cotton shirts and another one lined with black stretch-leather leggings seemingly sized for miniature gazelles.

ASHLEY Olsen has cancelled a trip to Australia to stay with her twin sister, Mary-Kate, who is being treated for “a health-related issue”.