Born in Menen, De Jonckheere lives in Wevelgem and is an only child. She is studying law at KULAK - Kortrijk University and speaks Dutch, French and English.
De Jonckheere, who stands 1.73 m (5 ft 8 in) tall, competed as the representative of West Flanders, one of 16 finalists in her country's national beauty pageant, Miss Belgium, held on January 9, 2011 in Knokke-Heist, where she became the eventual winner of the title, gaining the right to represent Belgium in Miss Universe 2011 and Miss World 2011.
As the official representative of her country to the 2011 Miss Universe pageant, broadcast live from São Paulo, Brazil on September 12, 2011, De Jonckheere will vie to succeed current Miss Universe titleholder, Ximena Navarrete of Mexico.
