Moss wore a red dress and briefly posed like a mannequin in the shop window for 12 seconds, before retreating to a VIP champagne reception with her celebrity friends and Topshop boss Sir Philip Green.
Store bosses allowed 150 shoppers in at a time to browse for a maximum of 20 minutes. Customers were allowed to buy just five items each at the four-hour preview, which started at 8pm last night. This was to stop clothes from being sold off on eBay and the same rules will apply during the nationwide launch this morning.
The Kate Moss for Topshop collection consists of about 80 pieces and prices range from£10 for a vest to about£200 for a soft-leather jacket. The supermodel was reportedly paid£3 million to help design the collection.
The clothing line will also debut at upmarket US retailer Barneys next week on May 8. Barneys has sold Topshop pieces in the past, but this collection is expected to draw a large amount of interest because of the supermodel's international profile.