The couple finally made it official as they appeared together on the red carpet at the Gala for the Global Ocean last night.
Orlando in a navy suit, and had eyes only for his girlfriend Katy. The two were pictured alongside hosts Prince Albert II of Monaco and Princess Charlene of Monaco. Katy looked flawless in a pink floor length Tom Ford gown which featured silver sequin sleeves.
Click through the gallery to see some of the best dressed models of the night!