Jaclyn Smith is known just as much for her on-screen prowess as she is for her timeless style. The iconic actress and Charlie's Angel brings out the softer side of menswear in the photo above from 1978—slightly sensual and totally sophisticated. For those looking to add a bit of the on-trend borrowed from the boys look that Smith emanates so well, you can pull it off in three easy steps.
1. Start with crisp separates: A streamlined, lapel-free cut makes an ivory blazer modern. Combine with a dark, lightweight turtleneck and tailored trousers for a look that's polished yet approachable.
2. Add quietly cool extras: True both then and now: pared-back accessories in timeless shapes—a bucket bag, pointy-toe pumps—equal subtle sex appeal.
3. Finish with a bouncy blowout: Bring a feminine touch to the boys' club vibe with high-shine, volume-packed hair.
jbrand.com; Gap turtleneck sweater, $60, gap.com; R+Co blowout balm, $28, randco.com
fantas-eyes.com; Diane von Furstenberg pumps, $180, 6pm.com; Mansur Gavriel bucket bag, $495, mansurgavriel.com
For more features like this, pick up the December issue of InStyle, on newsstands and available for digital download now.