At 17, Oluchi took the whole of Africa by storm when she won the inaugural edition of Face Of Africa contest in 1998. This was the first-ever continent-wide model competition, organized by the South African channel M-Net in collaboration with Elite Model Management. Her victory attracted her a three-year modelling contract with Elite Model Management.
Since then, Oluchi has never looked back. She has become one of the most sought-after models in the world and has graced the cover of many internation magazines such as Italian Vogue, i-D, ELLE, Nylon, Marie Claire, Allure, and other national editions of Vogue around the world. She became the face of campaigns for Gianfranco Ferré, Gap, Express, Banana Republic, and Ann Taylor, as well as working for Victoria’s Secret. Onweagba’s runway experience has been with John Galliano, Christian Dior, Shiatzy Chen, Costume National, Chanel, and Giorgio Armani, among others, in London, Milan, Tokyo and Paris. She has worked with such notable photographers as Steven Meisel, Nick Knight, and Patrick Demarchelier.
Beyond modelling, she tries to serve as a role model for other aspiring talents in Nigeria, especially young girls. In 2008, she launched a modelling agency in South Africa, OModel Africa, with offices in Johannesburg and recently in Cape Town.
In August 2005, she exchanged marital vows with her longtime companion, Italian fashion designer Luca Orlandi and they have a baby boy named Ugochukwu..
Oluchi believes that the best thing one can do is to marry her friend, which she did.
Along with Mr. Malan, she runs the modeling agency OmodelAfrica that represents fellow GBWs Andiswa, Ajuma, Kaone, Nnenna, Venantia and others on her roster.