Oluchi was the winner of M-Net Face of Africa preliminary screening at the M-Net office in Victoria Island, Lagos which she scaled through. The agency immediately groomed her to be one of Nigeria’s entrants for a model competition, the M-Net Face of Africa (now called the Nokia Face of Africa). With the support of her family and friends, she decided to compete in the inaugural edition of the Face of Africa in 1998. This was the first-ever continent-wide model competition, as opposed to a mere beauty pageant, and was organized by the South African subscription television channel M-Net in collaboration with Elite Model Management. With her slim, tall (6 ft 2 in) figure, and her natural beauty, she captivated the judges, and she handily won the competition. She was just seventeen years old. Elite Model Management awarded Onweagba a three-year modeling contract, and a whirlwind life as a highly-sought-after fashion model began
Since then she has become one of the sought-after international models, and is now a Victoria’s secret & Sports Illustrated model.
As one of the most high profile international models of Nigerian origin, she serves as a role model for other aspiring talents in the West African country, especially young girls. She volunteers her time and her image for such NGOs as LEAP Africa (an entrepreneurship incubator) and NIPRO, and now runs a modeling agency in South Africa, called ‘O Model Africa’ for African models as a way for exposing, discovering, developing and delivering a select portfolio of African models to our South African and international clients for catwalk shows, TV commercials, editorials, advertising, feature films and below the line work
She is married to Fashion Designer, Luca Orlandi of Luca Luca, and has two Children.