O’Shea had joined the men’s wear firm in March.
British men’s retailer has become another victim of changing consumer tastes and habits.
Mytheresa.com said a replacement has not yet been confirmed.
The Swedish brand chose an off-the-beaten path neighborhood for the sleek unit.
On the eve of New York Fashion Week, Roger Vivier and Mytheresa traded in the traditional proverbial kegger in favor of a more intimate soiree.
Erin O’Connor was among the guests at Harry’s Bar in Mayfair.