In an Instagram story, which she reposted on X, Chidimma confirmed that she would not be attending the Miss Universe Nigeria 2025 crowning due to falling out with the organisers.
The South African-born model made headlines in 2024 over allegations of identity fraud and a criminal investigation by the Department of Home Affairs.
Last year, the department confirmed that her Malawian mother, Anabela Rungo, had illegally registered her birth in South Africa.
She has since been arrested for contravening the Immigration Act and the Identification Act.
Chidimma reportedly fled Nigeria with her title, Miss Universe Nigeria, after a rumoured fallout with pageant organisers.
A year ago, the 23-year-old went from representing South Africa to Nigeria just a few weeks later.
Following her victory in Miss Universe Nigeria, she competed in Miss Universe in Mexico in December, securing the first runner-up position.
Hard pill to swallow
The finale took place on Saturday at the Balmoral Convention Centre in Lagos.
The 23-year-old said: “I’m having mixed emotions … a lot is happening. My heart is so broken because I am unable to crown my successor. It’s been a hard pill to swallow, but it is what it is.”