Olcay Gülşen, also known as OJ Gulsen, (born 20 July 1980) is a Dutch fashion designer.

[1][2] She has four sisters (Dolshe, Georgina, Venus and Jasmin) and a brother (Gökhan).

This gave her the opportunity to take on her third and biggest project to date: a fashion brand named SuperTrash.

[16] In 2010, five brand stores were opened in The Netherlands (in Utrecht, The Hague, Laren, Maastricht and Eindhoven), one in Ibiza and several shop-in-shops.

In total there are now 15 brand stores internationally, including Antwerp, Gent and Wijnegem in Belgium.