Charles Leclerc is taking a break from his hot rods to show off his hot bod ... ditching his shirt on Thursday for a yacht date with his girlfriend.
The Formula One star hit the Sardinian waters with Alexandra Saint Mleux ... and he proved that even though he drives for a living, he's a regular in the gym.
The 27-year-old flaunted some defined pecs and shoulders -- as well as a taut tummy -- in nothing but some small black shorts.