They've been thick and they've been thin. They've been rounded, straight-across, and sharply arched. Eyebrows have pretty much done it all. And the trends have changed quite dramatically over the years, so we've rounded up several decades worth of inspiration to better serve your eyebrow needs. Flip through to see the greatest arches of all time!Greta Garbo
In the 1930s, Greta Garbo's pencil-thin arches were all the rage. Garbo's brows were tweezed to perfection, while other starlets at the time shaved off their brows, choosing fully penciled-on exaggerated arches.В ВLauren Bacall
Lauren Bacall left behind the rounded brows of the 1930s, opting for a more angular set of arches. The 1940s star's sultry gaze just wouldn't have been the same without those defined eyebrows.В
Thick, bushy, and nearly entirely straight-across-Audrey Hepburn's brows were simply one of a kind.ВElizabethTaylor
Elizabeth Taylor-a name synonymous with glamour-also sported full eyebrows, like Audrey Hepburn. But Taylor's were softer throughout, with slightly rounded arches.ВAlfred Eisenstaedt/Getty
Bold eyebrows were an essential part of any Old Hollywood look, but Sophia Loren's naturally thick brows pretty much stole the show in the 1960s and beyond.ВRon Galella/Getty
When Brooke Shield's burst onto the scene in the late 1970s she was barely a teenager, but her striking face and those almost unruly brows made her one of the most recognizable stars of the time (and the youngest fashion model to ever appear on the cover of Vogue).Cindy
During the '80s and '90s, Cindy Crawford was the definition of a supermodel. Her beauty mark may be considered her trademark, but her well-defined eyebrows are right up there with it.ВVogue Italy
Though they say the age of the supermodel ended long ago, there are a select few who challenge that assertion. Joan Smalls is one of them. She's been called вЂњthe perfect face,вЂќ thanks, at least in part, to her strong brows.Huffington Post
Though other body parts may get more media attention, there's no denying Kim Kardashian has an impressive set of eyebrows. Whether they're light to match her blonde locks or dark and defined, they never look anything short of phenomenal.В ВFrazer Harrisson/Getty
Beyonce's brushed up brows are perfectly un-groomed. In true Beyonce form, they always look naturally flawless.Elle
And finally, the eyebrow goddess herself, Cara Delevingne. Dark, shapely, and impossibly thick-Delevingne's brows have been inspiring women to stash their tweezers, since they first showed up in fashion magazines almost four years ago.
Which brows are giving you the most eyebrow envy right now? Sound off in the comments!