Fashion house Raoul's plans to go global got a royal boost when Britain's Kate Middleton donned its ready-to-wear pieces during her visit to Singapore with Prince William in 2012.

"It's a proud moment [and] an encouragement to keep going," Odile Benjamin, co-founder and creative director of Singapore's home-grown label told CNBC's "Managing Asia. "It definitely helped the image of the brand. It's a great endorsement, no doubt."