Then: Natural is usually a good look, but this was a little too natural.
Now: Cleaned up, yet full with a nice arch -- these brows perfectly frame her eyes.
Images: Getty Images
Photo 6/17
Julia Roberts
Then: A classic case of tweezer neglect.
Now: The stray hairs are cleaned up, but her brows still have a bold, natural shape -- gorgeous.
Images: Getty Images
Photo 7/17
Sienna Miller
Then: '80s throwback brows: Too-dark, thick and straight. Like leg warmers and shoulder pads, some things should be left in their decade of origin.
Now: Gorgeous, full, face-framing brows.
Images: Getty Images
Photo 8/17
Sarah Jessica Parker
Then: Dark brows are too harsh when paired with super-blonde hair.
Now: Lighter-colored brows and toned-down arches offer a softer finish.
Images: Getty Images
Photo 9/17
Salma Hayek
Then: Too much plucking left brows sparse and uneven.
Now: They've grown back in (though not quite as far as her "Frida" days) for a more natural, flattering look.
Images: Getty Images
Brows are always at the center of the beauty conversation. The ever-evolving trends breed "brow gurus" like Anastasia and Benefit, as well as new tweezing, waxing and futuristic brow-building technology all the time. Why? Because brows make the single biggest difference in how we look.
"Eyebrows are the most important thing on a woman's face," says celebrity makeup artist Victoria Duke. "They set the stage for our expressions, which have a huge impact on how we look." Examples? "Really thin eyebrows can make you look older" Duke continues, "a strong arch makes you look more confident; a full, soft brow makes you look youthful.... Shape and color matter."
Not everyone nails the perfect brow, however -- celebrities included. Duke says some of the worst celebrity brows of the moment include Nikki Minaj's over-exaggerated brows, Demi Lovato's thin, harshly shaped ones and Kate Middleton's shapeless brows.
But there is hope for recovery from unfortunate arches. Keep clicking to see which of your favorite celebrities have finally mastered their perfect brow. Sometimes, it takes a lifetime. Here, the famous faces that made it happen in 2015.
