Then & Now: 9 Modern Takes on Iconic Hairstyles by the Decade

Enter the world of Prohibition, parties and flappers—whose curled, face-framing bobs are just as chic today. Demi Lovato's take on Gloria Swanson's style is darker and sexier thanks to vampy lipstick and seriously smoky eyes.

Lily James puts a silkier finish on her mid-length curls inspired by Katharine Hepburn.

Amber Heard's new age bun marries Janis Paige's structured knot with loose ends and a gold accessory—the perfect 21st century update.

Before rock-n-roll exploded across America, operatic elegance held strong in the early 50s. That meant the thicker, more velvety the curl, the better. Amy Adams' take on this side swept volume still holds true to the 50s style, while modernizing it with a crisp short cut and side part.

The legacy of Brigitte Bardot's iconic teased beehive lives on. For her interpretation, Kate Bosworth upped the polish and took the volume and bedhead texture down a notch.

70's hair was all about volume and shape. Solange channels Iman's look with lots of teasing for big, fuzzy texture.

Madonna's '80s pony is the pop queen version of a tiara, so it's no surprise that Beyoncé redefined the style in her own way various times in 2015.

Minimal styling, center parts and tendrils—prom hair in the best way—defined the '90s, and as we all know, the decade has made a major style resurgence. Emily Ratajkowski modernizes Gwyneth Paltrow's look with a lower bun and softer waves.

The 2000s were all about the crimping iron and butterfly clips—needless to say, it wasn't exactly the chicest era of hair. But Taylor Swift's soft, minimal use of the tool paid homage in the best way.