New York:
The Museum at the Fashion Institute of Technology, at 27th Street and Seventh Avenue in the trendy Chelsea neighborhood, http://fitnyc.edu/3662.asp.
The Costume Institute at the Metropolitan Museum of Art, Fifth Avenue and 82nd Stree http://www.metmuseum.org/.
Los Angeles:
The Fashion Institute of Design & Merchandising, 919 South Grand Ave. http://www.fidmmuseum.org.
Washington, DC:
The Textile Museum, 2320 S St. NW. Textiles more than fashion, but a great visit for fiberphiles. http://www.textilemuseum.org/ Ohio:
Kent State University in Kent, Ohio, is home to a school of fashion design and merchandising http://www.kent.edu/museum/.
Indianapolis:
The Indianapolis Museum of Art, 4000 Michigan Road, has a dedicated fashion and textile arts exhibition space http://www.imamuseum.org/.
Florence, Italy:
The Salvatore Ferragamo Museum, located in Palazzo Spini Ferroni, http://www.museoferragamo.it/en/index.php.
Paris:
Les Arts Decoratifs, at 107 rue de Rivoli, is a branch of the Louvre that also houses other design-related items like furniture. http://www.lesartsdecoratifs.fr/.
Musee Galliera, 10, avenue Pierre-Ier-de-Serbie - Paris 16e, Fashion museum located in a former mansion. Although the Wikipedia entry states it is open daily, it has never been open on any of my many visits to Paris. When I've called I've been told it is open only while exhibitions are on. Check ahead before going. http://www.paris.fr/portail/loisirs/Portal.lut?page_id=5854
Antwerp:
the Mode Museum (MoMu) at Nationalestraat 28 —http://www.momu.be
Barcelona, Spain:
Museu Textil i d'Indumentaria (Textile Museum), Palau de Pedralbes, Av. Diagonal 686, 08 034 Barcelona, Tel. 93 256 34 65. A wing of the Museu de les Arts Decoratives (Decorative Arts Museum) in Pedralbes Palace. Worth a visit just to walk the grounds, but when I was there they had an *excellent* fashion exhibition with fantastic giveaway pamphlet on the history of shapes in fashion for the past 300-400 years. http://www.dhub-bcn.cat/museutextilidindumentaria
Oslo, Norway:
Kunstindustrimuseet (National Museum of Art, Architecture and Design): Has a permanent fashion gallery. Pb. 7014 St. Olavs plass, N–0130 Oslo, Tel: +47 21 98 20 00. http://www.nasjonalmuseet.no/en/
London:
The fashion gallery at the Victoria and Albert Museum in London, is closed for renovation until next year.
The Fashion and Textile Museum. http://www.ftmlondon.org/
Toronto:
Bata Shoe Museum, at 327 Bloor Street West, http://www.batashoemuseum.ca.
Milan:
The Museum of Fashion Costumes, at Via Sant'Andrea, 6, inside Palazzo Morando, http://www.museodimilano.mi.it/.
Manchester, UK:
Gallery of Costume, Platt Hall, Rusholme, Manchester, M14 5LL
http://www.manchestergalleries.org/our-other-venues/platt-hall-gallery-of-costume/.