Madam Malkin's Robes for All Occasions

Madam Malkin's was a business operating within Diagon Alley when Wyldstyle drove through it on a motorcycle. (WC: New Adventures Await!)

Behind the scenes
Although not named in full in New Adventures Await!, the shop's full name is Madam Malkin's Robes for All Occasions. The shop originates from the Wizarding World franchise.