Mugler was born in Strasbourg, France. His passion led him to focus more on drawing than on school,at the age of 9, he began to study classical dance. By 14, he joined the ballet corps for the Opéra national du Rhin.
At the age of 24, Mugler moved to Paris, France. He began designing clothes for Parisian boutique, Gudule. At 26, Mugler, who was working as a freelance designer, began to design for a variety of large ready-to-wear fashion houses in Paris, Milan, London and Barcelona.
In 1973, Mugler created his first personal collection called “Café de Paris”. The style of the collection was both sophisticated and urban. Melka Tréanton, a powerful fashion editor, helped to launch his career. In 1976, she asked him to show his work in Tokyo for an event organized by Shiseido. In 1978, he opened his first Paris boutique at the Place des Victoires in the 1er Arrondissement. At the same time, Thierry Mugler launched a fashion collection for men.
During the 1980s and 1990s, Thierry Mugler became an internationally recognized designer, and his collections garnered much commercial success. At the request of the Chambre Syndicale de la Haute Couture, he completed his first haute couture collection in 1992.
He created the famous black dress worn by Demi Moore in the 1993 movie, Indecent Proposal.
In 2002 Mugler collaborated with the Cirque du Soleil. He directed “Extravaganza”, one of the scenes of Zumanity, and also created all of the costumes and the identity of the characters in the show.
In 2009, Mugler worked as artistic advisor to singer Beyoncé. He created the costumes for her “I Am… World Tour”.
In 2016, Mugler created and directed the music video and staging for San Marino’s Eurovision Song Contest entry I Didn’t Know performed by Turkish singer Serhat.
Despite retiring from his brand in 2003, he made the exception to design under his name “House of Mugler” for the Met gala in 2019, and for a dear friend of his, Kim Kardashian. Getting his inspiration from Sophia Loren in Boy on a Dolphin, Mugler envisioned a wet California girl; hence the creation of the “wet couture dress”.