Published 29/10/2010 | 05:00
As dad Chris de Burgh and mum Diane watched from the audience, Rosanna was crowned the world's most beautiful woman in front of a TV audience of more than one billion.
This year, Ireland North and South will be represented in the final 25 competing for the famous tiara.
Lori, a 19-year-old student and the first black Miss Northern Ireland, saw off her competitors in a range of events including the long jump (which she won), swimming and running.
"I'm a triple jumper, so I hoped to do well in the long jump," said Lori after winning the title.
"I'm glad I could stand up to the strong competition in the other events and come through with the medal. I'm in the final! I can't believe this!"
Both Irish Misses have already spent four weeks in China, rising at 5am most mornings to compete in preliminary rounds and various promotional events.