We’re only two weeks into 2019 and not only has a picture of an egg dethroned Kylie Jenner as the most liked photo on Instagram, but we’ve got our first viral trend: the 10 Year Challenge.\nWhat is the 10 Year Challenge?\nOriginally starting off by making its rounds on Facebook, users are encouraged to post a side by side photo of themselves from 2009, and 10 years later, today. It’s a fun way to see how friends and family have changed (or not) over the past 10 years, and with celebrities joining in on the fun, the #10YearChallenge is now a social media craze. Overall, the point of the challenge is to promote self-love, showing off your glow up over the past 10 years.\nBest Celebrity Hair Glow Ups\nWith so many influencers, celebs, and bloggers sharing their 10 Year Challenge, we couldn’t help but notice some dramatic hair changes, so we decided to put together our favorite hair transformations to bring you our own version of the 10 Year Challenge, hair glow up edition.\nAriana Grande\n\nCan you believe this is the same woman who was engaged to Pete Davidson, topped the charts with “thank u, next” and is now set to headline Coachella? Ariana’s drastic glow up went from harsh bright dyed red hair to her iconic signature high ponytail, and we’re so grateful for it. \nBlake Lively\n\nBack in her Gossip Girl days, Blake was the ultimate California girl with beachy blonde hair and tanned skin. 10 year later, Blake scored Ryan Reynolds and has come into her own as a style icon, mastering those perfectly undone, textured waves.\nNicki Minaj\n\n\n\n\n\n\n\n\n\n\n\n\n\nView this post on Instagram\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\nA post shared by Barbie® (@nickiminaj) on Jan 14, 2019 at 8:11am PST\n\n\n\nThis image was shared by Nicki herself. 10 years ago, Nicki had just signed with Young Money Entertainment, sporting blunt bangs and jet black hair. Today, the rapper\/singer’s voluminous blonde and bubblegum pink hair makes her look like a real-life Barbie doll, and we’re super into it.\nReese Witherspoon\n\nTime sure does fly when you are having fun!! #10YearChallenge pic.twitter.com\/gruONFaDDn\n— Reese Witherspoon (@RWitherspoon) January 15, 2019\n\n\nStop the presses, because Reese hasn’t aged a day! From an old Hollywood glam bob haircut to loose and soft face-framing waves, Reese hasn’t so much “glowed up” as just gotten more stunning. Elle Woods would be proud.\nMiley Cyrus\n\nBack in her Hannah Montana days and before she came in swinging on a wrecking ball, Miley was a Southern Belle with tanned, sun-kissed skin and flowing caramel and chestnut brown hair. Today, we’re loving Miley’s grown up waves and natural blonde locks. \nSelena Gomez\n\nBack in 2009, Selena was adorable with a thick bob haircut and side swept bangs, still in a relationship with Justin Bieber. After growing out her hair and chopping it off again, the pop star rocks an on-trend textured lob today, lightening up the color to soften her features. It appears Selena’s heart wants what it wants...and that’s short hair! Hey Sel, when you get tired of the chop, hit us up—our Ash Blonde Luxy Hair extensions would be your perfect match.\nJustin Bieber\n\nSpeaking of Justin Bieber, we couldn’t help but notice the major changes his hair hair has gone through in the past 10 years. From a signature chestnut brown mop with side-swept bangs to longer blonde hair, Justin has now settled down with supermodel wife Hailey Bieber at his side and we’re loving where he is today.\nJennifer Lawrence\n\nIn 2009, Jennifer was playing guest roles on sitcoms. Sporting long honey-blonde locks and sun-kissed, skin, wouldn’t hit stardom until two years later, when she would star in X-Men First Class and then take the lead in the Hunger Games. 10 years later, we’re loving this icier blonde shade on J-Law and the shorter, modern length.\nTaylor Swift\n\nRemember Taylor’s signature tight curls and bright blonde hair? Not only has Taylor’s music evolved in the past 10 years, but so has her hair. From country princess to badass pop star, Taylor’s modern blunt bangs and darker, dirty blonde blown-out bob haircut show that the singer has truly grown up.\nSophie Turner\n\nHow adorable is Sophie Turner back in 2009 when she was just 12 years old? Sophie’s natural hair color is actually blonde, however, she rocks a fiery auburn shade for her role as Sansa Stark in Game of Thrones. Today, Sophie wears her natural hair on red carpets and at fashion events, looking equally as stunning.\nAdele\n\nHello? Check out Adele’s hair glow up. Back in 2009, Adele won two Grammys for her debut album 19, sporting long side bangs and a deep auburn hair color. Fast forward 10 years later, the British soul singer has racked up 15 Grammys and chopped her hair into a flattering, graceful long bob. The secret to her voluminous lob? Hair extensions cut shorter to add volume.\nHow to do the 10 Year Challenge\nWant to get in on the fun? Simply choose a photo of yourself from 10 year ago and a photo of yourself today, stitch them together side by side using any photo editing app, and post away on your Facebook or Instagram. Don’t forget to use the hashtag #10YearChallenge!\nWhich celebrity hair glow up is your favorite? Do you prefer these celebs then or now? Share your 10 Year Challenge with us in the comments below—we’d love to see your own transformation.