Recently named the world’s handsomest man, actor James Marsden demonstrates the importance of the suit, no matter how casual.

Yes—menswear has gotten a lot more relaxed in recent years depending on what circles you run in. But regardless of how casual you go, a good suit and fitted shirt remain a go-to staple whenever you want to look your best.

Pick up the fall issue of GQ to flip through their latest and greatest guide to wearing a suit, modeled by non other than the star of HBO’s new hit series Westworld, James Marsden.