If you're looking for fashion accessories produced on your own 3D printer you may have difficulty finding 3D models in public repositories. Instead you might consider designing 3D fashion accessories yourself - and there's an Instructables guide to show you how.
Instructables user kaadee404 produced a lengthy set of instructions for producing a Lip Gloss Shell, Compact with Powder Tray and Mirror, Simple Ring, Bracelet, Simple Credit Card and DL Holder, Belt and Purse. Some of these were produced using 3D printing and others used alternative techniques. All used nylon material, which is suitably flexible for fashion applications.