In 1909, Lanvin joined the
Syndicat de la Couture (
fr), which marked her formal status as a
couturière. The clothing Lanvin made for her daughter began to attract the attention of a number of wealthy people who requested copies for their own children. Soon, Lanvin was making dresses for their mothers, and some of the most famous names in Europe were included in the clientele of her new
boutique on the
rue du Faubourg Saint-Honoré in Paris. One of her models Maria Minard was the grandmother of future French actor
Alain Delon. From 1923, the Lanvin empire included a dye factory in
Nanterre. In the 1920s, Lanvin opened shops devoted to home décor,
menswear,
furs and
lingerie. Her most significant endeavour was the creation of Lanvin Parfums SA in 1924. Her signature
fragrance,
Arpège, introduced in 1927, was inspired by the sound of her daughter Marguerite practicing her scales on the piano. (
Arpège is French for
arpeggio.) In 1922, Lanvin collaborated with celebrated French designer
Armand-Albert Rateau in redesigning her apartment, her homes and her businesses. The living room, boudoir and bathroom of the apartment was reassembled in 1985 in the
Musée des Arts Décoratifs, Paris. For this home, Rateau designed some remarkable 1920–22 furniture in bronze. The pair developed a friendship. Rateau came aboard Lanvin's empire as manager of Lanvin-Sport, designing the Lanvin spherical
La Boule perfume
flacon for Arpège, originally produced by the Manufacture Nationale de Sèvres. To this day, Arpège perfume globe, designed by Rateau, are imprinted with
Paul Iribe's gold image (rendered in 1907) of Lanvin and her daughter Marguerite. Rateau also managed Lanvin-Décoration, an interior-design department established in 1920, in the main store on the rue du Faubourg Saint-Honoré. ==Personal life, death and legacy==