#10YearChallenge
We're only three weeks in, but it's already been a weird year on social media and the #10YearChallenge is just the latest viral trend to take over the internet in 2019.
We've seen people get into dangerous situations while blindfolded as part of the Bird Box challenge.
This week we witnessed a photo of an egg beat Kylie Jenner to become the most-liked image on Instagram.
Now we're all comparing photos from 2009 to photos from 2019 as part of the #10YearChallenge.
The hashtag has already racked up 1.6 million hits on Instagram.
Naturally, lots of our favourite celebrities have taken the opportunity to share throwback photos.
Here are ten of our favourite celebrity #10YearChallenge posts:
Caitlyn Jenner
Caitlyn is being praised for owning the #10YearChallenge. She shared a photo of Bruce as her 2009 throwback, uploading the collage with the caption, 'Be authentic to yourself.'
Vicky Pattison
We love Vicky's relatable nature on social media. She's never afraid to poke fun at herself and that's exactly what she's done with her #10YearChallenge post.
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Reese Witherspoon
It's hard to believe but there are ten years between both of these images. Reese Witherspoon was 32 in the photo on the left and is 42 today.
Miley Cyrus
Miley Cyrus recently celebrated her ten year anniversary with Liam Hemsworth by getting married. She shared one of the cuter #10YearChallenge photos with a throwback to when the couple first started dating.
Chrissy Teigen
Chrissy Teigen continues to be hilarious on social media with her #10YearChallenge tweet. She shared a paparazzi image of her and husband John Legend who seems not to have aged a day.
googled myself in 2009. HOW IS JOHN GONNA LOOK EXACTLY THE SAME pic.twitter.com/9dRyeh3rS8
— christine teigen (@chrissyteigen) 14 January 2019
Ryan Seacrest
So clearly Ryan Seacrest went a bit further back than ten 10 years for his second post (swipe right) but it was worth it.
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When time and hair product are on your side (swipe right) #10YearChallenge
Tyra Banks
Tyra was another celeb who went a little further back. She shared a snap of her aged 18 on a runway in Paris alongside a photo of her today aged 45.
Tommy Dorfman
Tommy Dorfman of 13 Reasons Why took the challenge as an opportunity to share an update on his sobriety and mental health. Compared to how he felt at 16, he feels 'genuinely happy and comfortable in my own skin' in 2019.
Nicki Minaj
Nicki Minaj kept her accompanying caption short and sweet with just a couple of laughing emojis.
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Kelly Ripa
Like Miley, Kelly Ripa also opted for a relationship photo with the caption 'closer now'. She married husband and Riverdale actor Mark Consuelos in 1996. The pair eloped in May that year.