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."