The 24-year-old dental surgery student, from Lille, in France, beat 12 other finalists to take the crown at the pageant held in the Philippines yesterday.
In the last question round, when asked about the global refugee crisis, Iris highlighted the benefits of open borders.
“Having open borders allows us to travel more through the world and to find out more about what’s out there in the world.
“In France we want to have the most globalisation that we can. We want to have the biggest exchange of people that we can. Maybe someday that will change but now we have open borders,” she said.
She beat first runner-up Miss Haiti Raquel Pelissier and Miss Colombia Andrea Ovary (second runner-up)
Iris – the first delegate from France to win the title in more than 60 years – wants to make sure children from around the world will get the quality education they deserve.
“I had the chance to live in France and go to school every morning, and I think every child should have this chance, too,” she said.
After his royal flop last year, when host Steve Harvey announced the wrong winner, he joked on the show that he got the winner right this time. Rapper Flo Rida and multtiple award-winning R&B group Boys II Men provided entertainment.