Darren Criss at FX 2017 All-Star Upfront

Darren Criss in a one button suit at the FX Network 2017 All-Star Upfront.

Ludacris at 'The Fate of the Furious' Atlanta Screening

Check out his maroon one button suit, with thin notch lapels and short pocket flaps.

1966 Sears Christmas Book

Check out #2, a one button sport coat with side vents and cloverleaf lapels, "the look that's taking the lead in men's sportswear".