Decora (デコラ, short for "decoration style") is a Japanese street fashion style that originated in the Harajuku district of Tokyo in the late 1990s. It is the purest expression of maximalist, anti-fashion dress within Harajuku Fashion . The style is characterized by the principle of excessive, dense layering of accessories that completely obscure the base clothing.

Decora arose from the initial style of J-Pop idol Tomoe Shinohara, who popularized wearing dozens of colorful accessories and plastic jewelry. The street version exaggerated this to a chaotic, child-like extreme.

The origin of Decora can be tracked down to the popularity of the Japanese idol Tomoe Shinohara among teens during the 1990s . Her fashion sense was visually very similar to nowadays Decora, but featured childish hats instead of many hair accessories. Her fans, which were referred to as "Shinora", would often try to emulate her style while also trying to maintain originally. In the end, some of them would end up featured in the "Fruits!" streetsnap magazine which then would also coin the term Decora as name for their style.

One of the nowadays Decora icons is the Haruka Kurebayashi, who first appeared in various streetsnaps before becoming a model for KERA! magazine. She was also in charge by the design of the arches in Takeshita Street, which resemble her Decora style.

This style can be combined with pretty much any clothing but the most popular base fashions are Fairy Kei . The outfits combine casual clothes with many layers in the form of multiple hair clips, bracelets, tulle skirts, stockings, leg warmers, belts, bags, plushies, gloves, necklaces and pins. Face stickers and band aids are very common to be worn with colorful makeup that matches the clothing. Wigs of unnatural colors may be worn. Clothing may have many prints, such as colorful prints, heart prints, and many other patterns. Decora also focuses on DIY, where wearers create their own unique and decorative accessories.

Artists incorporating Decora include:

This section lists media that is commonly used as part of the Decora aesthetic, mostly in accessories that outfits contain, rather than the typical visuals being featured within the media.

Decoden (デコデン) originally refers to the excess decoration of mobile phone cases, but has expanded beyond the original meaning over the years and can refer to anything over-the-top decorated with cabochons. It is very popular among Japanese women in their teens to late-30s.

Cyber Decora refers to Decora outfit based on Cyberpop fashion.

Oshi Decora refers to a Decora outfit that revolve solely around one's favorite series or character as its theme while also being based on its signature color. Even while this type of Decora has existed for a long time, the name was only coined in 2022 by Bisuko Ezaki .

Hadeko is a sister style to Decora with a focus on bright rainbow colors. The outfits are characterized by a more androgynous appearance as well as psychedelic elements, often featuring tie-dye.

Dark decora is a substyle characterized by darker color schemes (with bright colors sometimes seen) and horror elements (e.g Eyeballs, Skeletons, Bats). Some punk elements are also seen within coords.