Simon Cowell and fiancee Mezghan Hussainy switched yachts in the Port of Nice on Saturday.

The American Idol judge wore a pair of white pants and no shirt.

Simon and Mezghan left the yacht Slipstream, and boarded the Siren.

The couple enjoyed a workout and some sun on the new boat.

They have been enjoying the Mediterranean for the past week before Simon resumes shooting his show ‘The X-Factor.’