Ready or not, the 20s are coming up, and not the ones you learned about in world history. The 10s (teens?) are moving into the pages of the past, so over the next month, and probably for years to come, we’re going to see everyone from pop culture columnists to historians trying to sum up the theme of the decade. Mari, a 26-year-old book critic, inspired Twitter users to get started reminiscing when she posted a picture of herself at the beginning of the decade vs. now. The thread now has thousands of replies in which people look back on how this decade has changed them.

The largest age group on Twitter is 25-34. A demographic that began the ‘10s as teens or young adults has undoubtedly seen a lot of adult milestones since then, like degrees, career beginnings, and relationships. Next in line is the 18-24 demographic, who have quite literally grown up this decade. It’s no wonder looking at old pictures of a person who hadn’t even experienced most of their formative years yet can bring up strong feelings (you also might notice that the older Twitter users taking part in the challenge are a little more chill about it.)

Here are some posts we liked—scroll down and have a look. Then share your thoughts, what you think of this trend, and how things have changed for you this decade in the comments below!

Twitter users look back on their 10-year-old photos

Image credits: MusingsOfAGirl

#1

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RoisinO Report

Louise Gerathy 2 weeks ago

People pay a lot to dye their hair that shade of grey!! Awesome!!

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#2

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andyduncangray Report

Rachel Neye 2 weeks ago

It shows

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#3

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KeannaDawnn Report

Rachel Neye 2 weeks ago

Wow, what a transformation

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But there’s no need to roast your former self, especially if you were a literal child in 2009. Learning to dress yourself isn’t a “glow up”, that’s just growing up. And nobody likes their fashion choices from 10 years ago. Don’t be so hard on yourself!

#4

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chrisgiddens Report

Jo Choto 2 weeks ago

Good on you, bro!

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#5

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a_heretic_now Report

Restless 2 weeks ago

Wow!!! Gorgeous!

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#6

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chocmilk Report

Rachel Neye 2 weeks ago

Good for you

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Most importantly, don’t let this challenge get you down if you’re not comfortable showing pictures of yourself from 10 years ago, or if you feel like you haven’t achieved much this decade compared to all the people flaunting their lucrative jobs and happy marriages.

2020 isn’t a test—there’s not anything more profound about it than any other year. If all you did was stay alive this decade, that’s awesome. I bet you took some cool photos and listened to a lot of great music. Won’t it be fun to discover even more next year?

#7

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skyledavis Report

Emily Ashcraft 2 weeks ago

You guys look so happy!!! :)

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#8

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shanegrayson1 Report

StormsTempest 2 weeks ago

Yesss he looks great! Good for him!

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#9

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calvincamps Report

Foxxy 2 weeks ago

You can see it in the eyes.

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#10

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JosieKendamu Report

Josie Christopher 2 weeks ago (edited)

WELP THERE I AM 😅

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#11

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anna_mcaree Report

Emily Ashcraft 2 weeks ago

Looks like your having fun!!!

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#12

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KiwiLibrarian Report

Mewton’s Third Paw 2 weeks ago

She’s aging really well. Gracefully.

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#13

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TivacherC Report

CrunChewy McSandybutt 2 weeks ago

That is a pretty man.

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#14

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Josh_More Report

ADHORTATOR 2 weeks ago

I feel with you...

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#15

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rajavocative Report

June Clavelle 2 weeks ago

Her hair is amazing!!!

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#16

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FaithNaff Report

Eye Roll 2 weeks ago

I think you can often tell when somebody is trans even before they're out if the closet. There's a girl at my work who when identifying as a bloke (pre-trans), didn't have one scrap of obvious femininity (wore really male clothes and interests, has a deep and manly voice etc) but for some reason I wasn't at all surprised when she announced it and started to change. There was always something feminine about her even though it wasn't at all obvious. Does that make any sense?

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#17

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reardonerin_ Report

Rachel Neye 2 weeks ago

From catapillar to butterfly!,but that does not mean you were not cute as a child.

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#18

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NessMudkip Report

Marcellus the Third 2 weeks ago

I don't think anyone but they themselves can see these "30years". I only see about 5years and a haircut?

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#19

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MinaDahle Report

Emily Ashcraft 2 weeks ago

the freckles are so cute on you!! <3

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#20

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Beecheyboy Report

Jo Choto 2 weeks ago

You definitely don't look ten years older.

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#21

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GodBlessMurrrka Report

Rebekka Rasmussen 2 weeks ago

ur super cute!

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#22

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luigipacho Report

Unhuman_Weirdo 2 weeks ago

From Neville Longbottom to Harry Potter

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#23

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HolyJose2391 Report

Miranda Panda 2 weeks ago

Great work!!

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#24

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ru_m_shine Report

Emily Ashcraft 2 weeks ago

The hair is very cool!

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#25

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JamesDa77436947 Report

How Terribly Unfortunate 2 weeks ago

Good for you. Finding the thing you want to do is always the best path to take. =D

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#26

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sketchii Report

Sadie Shapiro 2 weeks ago

You're absolutely gorgeous <3 <3

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#27

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siobhanmurphy46 Report

Foxxy 2 weeks ago

Wow, She looks so different.

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#28

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TomWard21 Report

Jo Choto 2 weeks ago

Didn't want to keep your Bieber do? Sound move!

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#29

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diskotektonik Report

June Clavelle 2 weeks ago

Ah so Hop from Stranger Things went back in time!!

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#30

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Decades challenge: me traveling to Karlowy Vary in 2009 at 17 vs me traveling to London at 27

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Cindy Richter 2 weeks ago

I liked the bangs!

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Note: this post originally had 77 images. It’s been shortened to the top 30 images based on user votes.