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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A drier, brighter but colder day than Thursday. Sunny spells are likely, although it will turn cloudier in the afternoon.
A generally fine and dry day. Sunny in the morning, with thickening cloud and strengthening winds in the afternoon.
A cold night, with clear spells developing for most. Tomorrow, generally fine and dry with plenty of sunshine, especially in the morning.