Topshop/Topman opening runway show with Miley Cyrus

British clothing retailer Topshop/Topman opened its new Michigan Avenue store (in the former Border's space) in grand style, with a ribbon-cutting ceremony, a runway show of Fall/Winter looks and a guest appearance by Miley Cyrus (who, we're told, partied with TOC editors last night at Paris Club and shopped at the store with other VIPs on Wednesday). Once the fanfare faded, the doors opened—and we're presuming the threads flew off the racks.