PARIS — Isabel Marant is in advanced discussions with French investment fund Montefiore for the sale of 51 percent of its capital, said Sophie Duruflé, the brand’s managing director.

The remaining 49 percent would remain in the hands of Marant, Duruflé and Nathalie Chemouny, the third partner in the French fashion label. Duruflé was confirming an unattributed report in French financial daily Les Echos on Friday.

“We have been in advanced discussions with Montefiore for several months, but nothing is signed,” she said.

“Isabel, Nathalie and I are a little bit self-taught. We have been growing this company for more than 20 years, in a very spontaneous, natural and sincere manner. We wanted to be accompanied by people who have the same vision as us, with a more strategic vision and skills that we slightly lack today,” she added.

Duruflé said it was important to them that the company remain in French hands, adding that Marant wanted to develop its digital services and expand into new product categories.

The company posted wholesale revenues of 150 million euros, or $166.5 million at average exchange rates, in 2015. It has 800 points of sale worldwide, including 22 freestanding boutiques, of which nine are directly operated.

The bohemian-chic brand, beloved by celebrities such as Kendall and Kylie Jenner, has been on a rapid expansion track in recent years. Its collaboration with Swedish high-street retailer H&M in 2013 further boosted the label’s global profile.

The deal would be the first investment in fashion for Montefiore, whose portfolio includes budget hotel chain B&B Hotels, car-hire broker Auto Escape and marketing and opinion research firm BVA.