By her second year on the runway, Mulder was modeling for
Valentino,
Yves Saint Laurent,
Lanvin,
Christian Lacroix,
Versace, and
Giorgio Armani. In 1991, she made the first of many appearances on the cover of
Vogue and also landed a contract with
Guess. A
New York Times article from 1991 described Mulder's work schedule, detailing a typical thirteen hour day packed with obligations to
Ralph Lauren, a French film crew,
Anna Sui and
Giorgio Sant'Angelo. Mulder appeared on the cover of British and Spanish
Vogue in 1991–1992 and became the face of a
Nivea advertising campaign. In 1992, Mulder signed a contract with
Victoria's Secret. Le Fur and Mulder also made an
infomercial and video. Mulder released a beauty and fashion
CD-ROM, in which she presented makeup, beauty, and exercise tips. One of the first issues of
Top Model magazine was entirely devoted to Mulder along with an entire issue of
Italian Vogue. Her two appearances in the
Sports Illustrated Swimsuit Issue in 1997 and 1998 and her poses for the
Victoria's Secret catalogue increased Mulder's profile. In 1997 she released her own calendar. At one point in her career, she was reportedly earning up to £10,000 a day. In 2000, Mulder retired from modeling for several years. She made her acting debut in the French short film
A Theft, One Night in 2001. Mulder also pursued music, and released an album including the single
I Am What I Am which achieved some success in the French charts in 2002. ==Personal life==