The supermodel was all smiles as she looked lovingly at her fiancé.
"Good morning Hong Kong. I [Heart] U," she captioned the snapshot.
The couple posed for a picture while observing the skyline.
The two lovebirds cuddled up during their sailing adventure.
The former America's Got Talent judge was grinning from ear to ear during their boat ride.
Of course, the former Project Runway host looked stylish throughout the trip.