Luc Carl is a 29-year-old bartender, DJ, nightclub manager, musician and author among things. But his most important job is being Lady GaGa's boyfriend.

When he is not being the world's biggest pop star's boyfriend, he writes his own blog where he promotes his upcoming book called The Drunk Diet. In a nut shell the book is about how to stay and get thin while still drinking every night. No he is not joking, he is quite serious about his pursuit to be a slim alcoholic.

As a bartender he admits that alcohol is always going to be a part of his lifestyle. Some of his tips to stay slim while drinking include: drink top shelf liquor instead of bottom shelf, if you're going to eat pasta, at least go out to a nice restaurant, and stay away from beer and egg yolks.

Here's an excerpt from his book, "After reading countless books and being told time after time that it's impossible to lose weight while drinking heavily, Luc Carl decided to take matters into his own hands. Join him on his journey to lose 40 pounds, without giving up his principles of being a hard drinking party maker." 

He writes on his blog, "I'd like to think DRUNKDIET is addictive...In a non-habit forming, good for your soul kind of way."