The shooter, thought to be a lone gunman, opened fire on Friday night.
The 1,300-square-foot boutique blends French and British inspirations.
Regent Street is magnetizing American megabrands and the latest one to open shop on the storied British thoroughfare is Polo Ralph Lauren.
The retailer is 12 months into a turnaround strategy that has otherwise reaped some positive results.
The Austrian hosiery specialist is to roll out the new retail concept in Shanghai on Thursday.
Mouret takes over a town house and fills it with art and porcelain.
The four-story town house features a couture salon and a ground-floor accessories showcase.
The luxury chain has long considered opening freestanding shoe shops.