Farfetch served its millionth customer on Friday and founder José Neves surprised the shopper with a phone call to celebrate the milestone.
He gave the customer, who bought a pair of Common Projects boots from Forty Five Ten in Dallas, their order free of charge.
Farfetch received its first order on 4 October 2008 and has since sold enough shoes to circle the equator six times and enough clothes to cover the Empire State building six times.
It serves customers in almost 190 countries and has offices in 11 cities around the world. It most recently opened an office in Lisbon on 11 August.
Total transaction value is expected to increase to $800m (£621m) in 2016, up from $500m (£388m).