There are plenty of trends on social media - fashion trends, fitness trends and, well, all sorts of popular online crazes. Some of them, we can agree, are pretty ridiculous (and potentially fatal) - ahem, the tide pod challenge.
Usually, however, they're pretty harmless and more often than not, they're incredibly sentimental and heartwarming.
And there are few online trends as heartwarming as the one which sees people recreating vintage photos featuring their own grandparents.
So, without further ado, here are 20 photos, some from as far back as a century ago, which were given a modern reworking by some very ambitious grandkids.
1. A pair of Hitotsubashi University graduates
Credit: Scrumtrullecent/Reddit
2. The apple didn't fall too far from the tree
Credit: GreenCristina/Reddit
4. Gamers across generations
Credit: ImagesOfNetwork/Imgur
5. A timeless look
Credit: snowystormz/Reddit
6. Barbecue in the country
Credit: 4shoot4/Reddit
7. The doting dad pose should always be a thing
Credit: stpatrick32/Reddit
8. Father/son traditions that never grow old
Credit: Sandite5/reddit
9. These photos were taken 69 years apart on the exact same street in France
Credit: PointsGenerator/Imgur
10. This cricket player's grandson recreated grandpa's sporting ads
Credit: Phillip Brown/dailymail.co.uk
11. Grandma on the left, granddaughter on the right - taken nearly a century apart
Credit: Taintlyn/Reddit
12. The classic "sitting on a bonnet" shot
Credit: MalcEZ/Reddit
13. They trained in exactly the same place - just 100 years apart
Credit: Goat_Overlord/Reddit
14. How are they not the same person?!
Credit: palimpsestor/Reddit
15. Okay, the resemblance is too uncanny!
Credit: noeatnosleep/Reddit
16. Like grandfather, like grandson
Credit: stides22/Reddit
17. Both were taken by the Arno River in Florence, Italy
Credit: wisawasa/Reddit
18. They're wearing the exact same jacket
Credit: brosenstock8/Reddit
19. The woman on the right and her boyfriend recreated her grandparents' photo
americanadaptation/Imgur
20. Both grandmother and granddaughter are aged 20 in these photos
Credit: keldry27/Imgur
Know of any photos of your grandparents you would like to create?