Sales boss Eugene Culhane said Derbyshire company Pretty Polly is "delighted" that celebrities like Beyoncé and Rihanna wear the company's tights.
He said: "I think it's the result of a lot of hard work and a lot of time spent in the United States, getting our products onto celebrities, getting our products into the right retail environments, and spending a lot of time on social media."
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The British manufacturing giant - which is worth £13bn - is to make voluntary payments to settle cases across the world.
Sean Williams died after being struck by a car after he ran across two lanes of traffic while the lights were on green.
The accident happened on the A46 in Drayton, near to Wildmoor Spa, at around 12.30pm.