The #10YearChallenge, also known as the #HowHardDidAgingHitYouChallenge, has spread like wildfire with everyone from A-list celebrities to everyday Instagrammers partaking. It has left us with an endless amount of amazingly stylish moments to reminisce over.

Keep scrolling to see some really cool standouts.

Reese Witherspoon

View this post on Instagram

Time sure does fly when you are having fun!! #10YearChallenge

A post shared by Reese Witherspoon (@reesewitherspoon) on Jan 14, 2019 at 7:57pm PST

Felicia Walker

View this post on Instagram

??#10yearchallenge ????don’t ????want ????this ????smoke ???? #howharddidaginghityouchallenge ? Not very hard???????And I’m blessed for all 43 years. I’ll be 44 next week ....my #ObamaYear is loading and I could not be happier ??[PS: pic from the left is from my very first fashion week evahhhh???? at the @arisefashionweek show. I think I met @lolaogunnaike backstage for the first time, right, lady??? @maccosmetics did my makeup and that brow highlight was ON ON] [PPS: my knees do actually feel all 43 years so there’s that?????????...if you know of a good yoga or barre opportunity for me, please drop it in the comments because young face old body????]

A post shared by Felicia Walker (@thisthatbeauty) on Jan 13, 2019 at 11:54am PST

Janet Jackson

View this post on Instagram

challenge accepted ?? #glowupchallenge #howharddidaginghityouchallenge

A post shared by Janet Jackson (@janetjackson) on Jan 13, 2019 at 1:54pm PST

Aimee Song

View this post on Instagram

2009 vs now. I was in school full time while working part time at two different retail stores (#DSW & #ardenb RIP) + working as an intern for the San Francisco Design Center. All the items you see in my 2009 photos are all thrifted except for the bags and my first designer shoe purchase (2nd photo) which was a pair of @chloe heels that I bought with my employee discount at #DSW. I might’ve lost the hair length and the overstacked bohemian jewelry, and my then boyfriend but I couldn’t be happier and grateful to be where I’m at now! #10yearchallenge #2009vs2019

A post shared by Aimee Song (@songofstyle) on Jan 14, 2019 at 9:46pm PST

LeAnn Rimes

View this post on Instagram

I caved... 2009 vs 2019 So crazy to dig into pics from 10 years ago. I LovE aging! Wisdom comes with a wrinkle or two... and I’ll take it! The woman I am in 2019 is way more joyful, settled, connected and peaceful than I was 10 years ago and I’m still expanding into all of these pieces of myself. I am grateful for who I was in 2009, who I am now and every version of me in between. I look forward to creating more smile lines ?? #howharddidaginghituchallenge #agingchallenge #agechallenge #2009vs2019 #2009 #2019 #moresmilesin2019

A post shared by LeAnn Rimes Cibrian (@leannrimes) on Jan 13, 2019 at 8:08pm PST

Jessica Biel

View this post on Instagram

What a difference ten years can make! Although I do still have a lot of ?? for my tan lines, hoops and blonde days... #10YearChallenge

A post shared by Jessica Biel (@jessicabiel) on Jan 13, 2019 at 6:37pm PST

June Ambrose

View this post on Instagram

#sacredsunday #howharddidaginghityouchallenge ???? grateful for going ??

A post shared by June Ambrose (@juneambrose) on Jan 13, 2019 at 8:38am PST

Ellen DeGeneres

View this post on Instagram

#10yearchallenge. I never realized how differently I hold my hand now.

A post shared by Ellen (@theellenshow) on Jan 14, 2019 at 1:53pm PST

Gabrielle Union

View this post on Instagram

1998. 2008. 2018. ?????? #20year10yearchallenge

A post shared by Gabrielle Union-Wade (@gabunion) on Jan 14, 2019 at 10:23am PST

Jennifer Lopez

View this post on Instagram

#10yearchallenge #challengeaccepted ??

A post shared by Jennifer Lopez (@jlo) on Jan 15, 2019 at 1:34pm PST

Robin Roberts

View this post on Instagram

Aging? Never heard of it. #10YearChallenge

A post shared by Good Morning America (@goodmorningamerica) on Jan 15, 2019 at 7:56am PST

","canonicalUrl":"https://abcnews.com/GMA/Style/10yearchallenge-2019s-big-meme-surfacing-amazing-style-throwbacks/story?id=60389514","legacySlug":"/style/story/10yearchallenge-2019s-big-meme-surfacing-amazing-style-throwbacks-60389514","noIndexNoFollow":false},"publishTime":"20:40","publishDate":"01-15-2019","updatedTime":"21:49","updatedDate":"01-15-2019","socialImage":{"alt":"Tyra Banks talks on her cell phone as part of a performance of a dance flash mob for \"The Tyra Banks Show\" in Union Square on Aug. 17, 2009 in New York.","credit":"Mike Coppola/FilmMagic via Getty Images, FILE","ratio":"16x9","url":"https://s.abcnews.com/images/GMA/tyra-banks-2009-02-gty-jc-190115_hpMain_16x9_1600.jpg","width":992,"height":558},"datePublished":"1/15/2019 20:40:00 GMT","video":{"live":false,"id":60389514,"headline":"#10YearChallenge surfaces celeb style throwbacks","mediaAssetTitle":"#HOWHARDIDAGINGHITYOUCHALLENGE","description":"These fashion blasts from the past are everything.","duration":"NaN:NaN","posterImg":{"url":"https://s.abcnews.com/images/GMA/default-img-undefined.png","width":608,"height":342},"video":{},"playlist":["59909014","60199409","60122178"]},"relatedItems":[{"contentType":"story","date":"December 20, 2018","headline":"We carried a micro purse and it forced us to live our best minimalist life","section":"style","slug":"/style/story/carried-micro-purse-days-forced-us-live-best-59909014","id":59909014,"image":{"alt":"We carried a micro purse and it forced us to live our best minimalist life","url":"https://s.abcnews.com/images/GMA/micro-purse-01-abc-jc-181219_hpMain_4x3t_240.jpg","credit":"ABC News","ratio":"1x1"}},{"contentType":"story","date":"January 7, 2019","headline":"What the stars of 'Crazy Rich Asians' wore to the 2019 Golden Globes ","section":"style","slug":"/style/story/stars-crazy-rich-asians-wore-2019-golden-globes-60199409","id":60199409,"image":{"alt":"What the stars of 'Crazy Rich Asians' wore to the 2019 Golden Globes ","url":"https://s.abcnews.com/images/GMA/golden-globes-constance-wu-gty-jef-190106_hpMain_2_4x3t_240.jpg","credit":"Frazer Harrison/Getty Images","ratio":"1x1"}},{"contentType":"story","date":"January 9, 2019","headline":"Do you remember these iconic fashion moments from 1999? ","section":"style","slug":"/style/story/remember-iconic-fashion-moments-1999-60122178","id":60122178,"image":{"alt":"Do you remember these iconic fashion moments from 1999? ","url":"https://s.abcnews.com/images/GMA/MainImage_90sFashion_v02_sd_hpMain_4x3t_240.jpg","credit":"Getty Images, GMA Photo Illustration","ratio":"1x1"}}],"relatedContentSection":"news","schemaContent":{"name":"#10YearChallenge surfaces celeb style throwbacks","description":"These fashion blasts from the past are everything.","duration":"NaN:NaN","uploadDate":"01-15-2019","publication":"01-15-2019","images":"https://s.abcnews.com/images/GMA/default-img-undefined.png","link":"https://www.goodmorningamerica.com/style/story/10yearchallenge-2019s-big-meme-surfacing-amazing-style-throwbacks-60389514"}},"playlist":[{"id":"133882828","contentType":"story","section":"news"},{"id":"133810954","contentType":"story","section":"news"},{"id":"133779647","contentType":"story","section":"news"},{"id":"133810835","contentType":"story","section":"news"},{"id":"133749799","contentType":"story","section":"news"},{"id":"133777519","contentType":"story","section":"news"},{"id":"133748258","contentType":"story","section":"news"},{"id":"133730535","contentType":"story","section":"news"},{"id":"133712423","contentType":"story","section":"news"},{"id":"133694181","contentType":"story","section":"news"},{"id":"133688738","contentType":"story","section":"news"},{"id":"133616358","contentType":"story","section":"news"},{"id":"133616342","contentType":"story","section":"news"},{"id":"133522899","contentType":"story","section":"news"},{"id":"133584123","contentType":"story","section":"news"},{"id":"133579397","contentType":"story","section":"news"},{"id":"133482839","contentType":"story","section":"news"},{"id":"133390157","contentType":"story","section":"news"},{"id":"133415361","contentType":"story","section":"news"},{"id":"133414032","contentType":"story","section":"news"}],"kvps":{"pgtyp":"article","lang":"en","sp":"goodmorningamerica","programmatic":"true","bundleId":"com.abcnews"}},"analytics":{"accountID":"wdgnewwdgnewgmaweb","ns":"gma","pageName":"gma:style:video","pageType":"video","globalSpecVersion":"v1.08","siteDifferentiator":"gma:site","tagID":"g_page01","userABCookie":"0","section":"style","title":"#10YearChallenge surfaces celeb style throwbacks","pubTime":"15:40","pubDate":"01-15-2019","modTime":"16:49","modDate":"01-15-2019","taxonomyTags":"none","id":60389514,"editorialOtherSubjects":"","wordCount":"none","columns":"none","authors":"","authorsUnit":"none","authorsBureau":"none","subBrand":"Good Morning America","provider":"Good Morning America","videoName":"#10YearChallenge surfaces celeb style throwbacks","mediaAssetTitle":"#HOWHARDIDAGINGHITYOUCHALLENGE","videoId":60389514,"mediaOnPage":"video","legacySlug":"/style/story/10yearchallenge-2019s-big-meme-surfacing-amazing-style-throwbacks-60389514"},"taboola":{}},"request":{"headers":{},"httpVersion":"1.1","method":"GET","url":"/video/60389514","vary":{"host":"www.goodmorningamerica.com","cached":true,"path":"/video/60389514","forwarded-proto":"https","device":"desktop","userab":"0"}},"viewport":{"width":1260,"height":0},"user":{}};