d.i.a. (ダイヤ), also known as d.i.a. spec and SONGEUR d.i.a. (ソジュールダイヤ) is a Japanese clothing brand that was started around 2002. The catchphrase of the brand is "The good old days of American".
Concept[]
The brand is popular with tsuyome gyaru, ane gyaru and Onee gyaru, and the brand is well known for black, white and gold aesthetic. d.i.a. is also known for it's large belts, which are often gold and feature chains and charms hanging from them.
History[]
d.i.a's first blog post was created on June 11, 2009, and the blog was kept updated up until 2017, with the last blog post created on July 20, 2017.
Many members of the gyaru circle Black Diamond wore d.i.a. branded items, and the brand was hugely popular with Kuro gyaru around the early to mid 2010s.
d.i.a made a comeback in 2025 with the creation of a new Instagram account before the launch of a new clothing collection in June.[1]