He must have really needed his nicotine fix!

Marc Jacobs is currently vacationing in St. Barths, and we caught the designer shopping at Prada and Cartier while puffing away on both a cigarette and a vaping device. Isn't that a little much for the lungs?

We were also a bit surprised by his outfit, as we wouldn't think a stylish gay man would ever be caught in public in basketball shorts. We guess the Chanel purse saves the ensemble from being a total disaster!

The fashion industry powerhouse is about to be rubbing elbows with tons of celebs on the Caribbean island. Every year, A-listers make their way to the tropical paradise to ring in the New Year. Some people that are already in town? Russell Simmons and model Izabel Goulart.

Let the party begin!