This could be your best excuse for booking a last-minute trip to London: A massive private collection of Madonna’s most famous and infamous costumes goes on display for the very first time starting Saturday. From the black and gold-coned “Open Your Heart” bustier to the wedding gown she wore on the “Like a Virgin” tour to the baseball uniform she wore in A League of Their Own, more than 300 of the Material Girl’s dresses, costumes, artifacts and personal items will be up for viewing at the Old Truman Brewery through March 22. The unforgettable pink gown (and gloves) that she wore in her “Material Girl” video could even be yours! The owners will be auctioning the dress off to one lucky — and probably very rich — bidder after the exhibit ends. Tickets to the exhibit, entitled “Simply Madonna: The Materials of the Girl,” are available through ticketmaster or preview the collection at marqueecapital.com.