Fashion fans have rocked all over denim in stylish ways lately—not counting the so called "Canadian tuxedo" (aka a denim jacket and jeans), a designation that's fair to neithter tuxes nor Canadians.

Still, few of us do denim in the boardroom. But thanks to a few boundary-busting labels, the denim suit is now kicking office ass.

"It steps up your suit game for the season," says Samuelsohn designer Arnold Silverstone. His brand's suit (above) of Italian denim and silk has full canvas construction "to keep it tailored and sharp." Wear it with a crisp shirt for a formal look or a light sweater to go from a meeting to a date. 

The Best Jeans for Men: 20 Pairs of Denim for the 5 Major Body Types >>>