Pierre Balmain makes some seriously well-tailored clothing. The collection for spring/summer 2013 is no exception. Still, the most impressive aspect of the lookbook is the casual elegance that is brought to more formal attire. Sloppily worn tuxedos in the daytime somehow translate well—breaking every single menswear rule in one fell swoop. We won't argue. Click through the thumbs to get a better look at the complete men's collection.