Grandfather's adorable 'fit check' with his granddaughter will make your day

An adorable video of 24-year-old Grace Pettit and her 86-year-old grandfather Liam Ryan has been doing the rounds in which "Gramps"—as he's affectionately known—can be seen doing a "fit check." It's a trend where Gen Z-ers post videos of themselves wearing outfits and then name-checking their outfit brands. Pettit shared a TikTok clip of the fit check on December 18 and it has since gone viral for Gramps's adorable attempt at the trend. "Hi, I'm Gramps," the sweet elderly gentleman says in the video. "We're doing a fit check," he added before sharing his outfit details.

"My jeans are a Christmas gift. My shirt is a Christmas gift. My sweater, my brother gave me. And my sneakers..." he continued, with his granddaughter giving more instructions to her gramps.

"This is my new favorite video ever," Pettit captioned her post with a lot of people agreeing. "This made my day," wrote one viewer. "I will NEVER get over this video it's my Christmas gift this year," another TikTok user said. "I'm about to cry he's adorable," a third replied.

Who doesn't love seeing the older generation trying out some fun trends from people decades younger? It's such a cute way to bond too! Pettit and Ryan told Good Morning America that they share a "very close" relationship and that Ryan was onboard immediately when Pettit suggested doing the fit-check video.

"We were just sitting on the couch, hanging out, and I kind of was like, 'OK, let's do something. We're both not doing anything.' And then I forced Gramps to get up and make this video," Pettit confessed. "We obviously had no idea that people would like it so much."

Ryan admitted that his granddaughter helps keep him feeling young but he never expected to get such a big reaction from the internet. "He's still in shock," Pettit said of her grandfather's response to the internet's overwhelmingly positive reaction to the video. "It doesn't make sense to either of us, but as long as people are smiling."

According to the adorable grandpa, what he found the "funniest about the video is when I didn't hear her say goodbye and I repeated the whole thing. I thought that was hilarious," he said. As for the rest of it, he admitted that he was quite "amazed." "I couldn't imagine it would be that interesting to anybody," Ryan said.

The duo can't believe that such a small clip could bring so much joy to so many people that they've never even met. "We're happy we could make so many people laugh and you know, it was just something fun for us to do and we're glad other people saw it like that," Pettit added.