Unrecognizable David Letterman Goes for Jog in St. Barts

David Letterman keeps his headphones in as he goes for a run on Friday afternoon (March 25) in St. Barts, France.

The 68-year-old former late-night host is currently vacationing on the French island with his wife Regina.

PHOTOS: Check out the latest pics of David Letterman

Later in the day, he was spotted going for a drive in a red, vintage car.

David debuted his bald and bearded look for the first time during a run earlier that same week.

15+ pictures inside of David Letterman going for a jog in St. Barts…