Kate Grant was crowned winner at Teen Ultimate Beauty of the World pageant - the first ever contestant with Down's Syndrome to receive such an accolade.
The 19-year-old went away with the top prize despite doctors who painting "a bleak future" for her and said she wouldn't learn how to speak or read.
Grant competed in Portadown, Northern Ireland. The competition has three categories for children, teenagers and over-20s, and is open to anyone, regardless of weight or height, Mail Online reports.
Forty candidates took part from around the world, with Grant representing Northern Ireland.
The 19-year-old has wanted to be a model since she was 13 years old and modelled at Belfast Fashion Week, as well as for boutiques in her hometown of Cookstown.
She first caught the attention of the public last year after her mother Deirdre posted a photo of her daughter on her prom night and asked the internet if it was unrealistic for her daughter to aspire to be a model.
The post was subsequently shared almost 30,000 times, with readers sending messages of support for them both.