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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."
Derbyshire tights manufacturer Pretty Polly has seen a growth in sales in recent years.
More than 90% of Pretty Polly's products are designed, developed and manufactured at its factory in Bridge Foot, Belper.
The firm has also become a favourite of female singers, including Rihanna, Jessie J, Una Foden of The Saturdays, X-Factor girl group Little Mix and model Paris Hilton.
Sales boss Eugene Culhane said: "Our international market has absolutely exploded. We have developed fantastic business with Macy's, Bloomingdale's and Urban Outfitters and a lot of celebrities are picking up on our products, including Jessie J and Paris Hilton."
A Belper tights manufacturer recently received a surprise phone call from Beyoncé's stylist revealing she had worn their tights.
Pretty Polly sales boss Eugene Culhane said he could have "fallen off his chair" after receiving the call.
The singer and her back up dancers all wore the company's tights for a half-time show at the Super Bowl in New Orleans which was shown on television across the world.
He said: "Beyoncé was on stage for four-and-a-half minutes doing her stuff in tights which were made in Belper."