Matches Fashion was started up by husband and wife Tom and Ruth Chapman in 1987
Demand for designer dresses and handbags made America the biggest market for a fashion boutique that was founded in Wimbledon.
Revenues at Matches Fashion, which was started by husband and wife Tom and Ruth Chapman in 1987, soared 44 per cent to £293million last year as its online business boomed in the US.
Sales to American shoppers rose 54 per cent in the year to January 31.
Profits surged 34 per cent to £26million as customers splashed out on £455 Stella McCartney trainers and £2,200 Prada silk dresses.
The royal wedding boosted sales of occasion dresses by 140 per cent over the weekend.
A £1,750 polka dot dress by Italian designer Alessandra Rich sold out after Abigail Spencer – Meghan Markle’s Suits co-star – wore it at the service at St George’s Chapel in Windsor Castle.
Matches saw 82 per cent of its sales generated outside the UK last year.
More than nine in ten sales are now made online