As Brown has grown up, she's become more interested in beauty and skincare — she even has her own brand, Florence by Mills ... and yes, it does sell brow gel.
Miley Cyrus' intense stare might get all the attention in that first photo, but we shouldn't overlook the over-plucked brows.Cyrus in 2008 and 2019.
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In 2022, Cyrus is rocking bangs and her eyebrows are a bit more difficult to spot.
Gabrielle Union looks great with any eyebrow trend.Union in 2001 and 2021.
Victoria Beckham has always been trendy, whether it was adhering to the '90s thin-brow trend, or the bushy brows of the 2010s.Victoria Beckham in 1996 and 2018.
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You can count on Beckham to be the trendiest person in the room — her '90s look with thin brows and a dark lip liner with light gloss was all the rage.
David Beckham used to have a slit in his left eyebrow that he has let grow in.David Beckham in 2001 and 2018.
"Sperm brows" are "brows [that are] too thick at the inside corners and over-plucked everywhere else."
Nicole Richie's eyebrows were as thin as anyone's — they're completely different now.Nicole Richie in 2002 and 2020.
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Richie was another victim of over-plucking.
Kylie Jenner's lips aren't the only thing that's changed — her brows are much more filled in.Kylie Jenner in 2011 and 2020.
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It's no surprise that the makeup mogul's looks have become much more polished over time.
Christina Aguilera used to rock a penciled-on look, but now her brows are filled in.Aguilera in 1999 and 2021.
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More than 20 years after she made a name for herself on the original "Mulan" soundtrack with "Reflection," Aguilera recorded two new songs for the live-action remake in 2020.
Kim Kardashian's brows have always been dark, but now they look thicker and more defined.Kim Kardashian in 2006 and 2017.
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Though her love for nude lip gloss has remained the same.
Jared Leto shaved off his eyebrows for "Suicide Squad."Jared Leto in 2015 and 2019.
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Taylor Swift's brows are now more arched and defined than they used to be.Taylor Swift in 2006 and 2020.
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In 2006, Swift was still rocking curly hair.
Gwen Stefani's brows in the '90s looked completely drawn on.Gwen Stefani in 1995 and 2020.
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Stefani has now embraced the popular 2010s bushy-brow trend.
Selena Gomez also has bolder brows.Gomez in 2008 and 2021.
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Much like her fellow Disney alum Demi Lovato, Gomez embraced her natural brows in her early career, but now fills them in.
Bella Hadid's look has changed a lot in just five years.Bella Hadid in 2014 and 2019.
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As Hadid's hair has darkened, her eyebrows have been more dramatically drawn on, and darkened to match her hair.
Cameron Diaz's brows were barely there, but now they add to her unique look.Cameron Diaz in 1994 and 2016.
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Diaz's frosted eye shadow and thin eyebrows scream '90s, but now her brows are 2020s-appropriate.
Tom Hardy used to have a slit in his eyebrow, as well.Tom Hardy in 2015 and 2019.
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Hardy frequently experiments with his look, from bulking up to play Bane in "The Dark Knight Rises" to growing a bushy beard for his role in "Peaky Blinders."
Drew Barrymore's eyebrows were almost invisible.Drew Barrymore in 2002 and 2015.
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Barrymore is just one of many celebrities who has turned her years in the spotlight into a thriving beauty brand.
Lucy Hale's brows have always been full, but now they're at their bushiest.Hale in 2006 and 2021.