Custom Costume Makers
  Http://www.audreycarol.com/ - She has a gallery of her work plus a store of items she is currently selling or will take orders for. She's done Lord of the Rings, Star Wars, Serenity, Harry Potter, Civil War, (lots of) Renaissance, and Pirates custom costumes to date.
  Http://www.twinrosesdesigns.com/ - Site features costumes from all eras, from cave men to present, as well as from movies like Star Wars (including the Emperor, Red Gaurd, Jedi Librarian, and Darth Maul), Lord of the Rings (including costumes for Elrond, Arwen, Eowyn, Legolas, Faramir, etc.) and it looks like one Star Trek outfit.
  Http://www.verymerryseamstress.com/catalog.htm - This site features custom costumes created from the movies Titanic, Ever After, Lord of the Rings, Moulin Rouge, Sleepy Hollow, Wizard of Oz, and one for Star Wars. It also has tons of other period pieces, like medieval gowns and props, cloaks, boots, etc.
  Http://www.medievalfantasiesco.com/Shoppe.htm - Mostly Renaissance and Medieval wear, it does have a few Lord of the Rings dresses ready made.
  Http://www.rossetti.vispa.com/index.html - Absolutely top of the line custom costume maker, all her outfits are PRICEY, but the materials used are never less than the best. Site mostly features period dresses for women that are absolutely gorgeous. Nothing I can afford, but fun to browse!
  Http://www.enchantedcostumes.com - Another top notch costume maker that only uses top of the line materials. Pricey, but has absolutely outstanding costumes, including a wide range of fairy outfits (for both children and adults). She's also done Star Wars (Padme dress), Lord of the Rings, and Ever After replicas.