However, her family were so determined to get her sitting at the table, they made her a 'bubble suit' - you can check out their witty creation below:
TikTok user Crista LaRocks (@cristalarock), from Long Island, New York, was devastated when she found out her sister had the virus.
It's safe to say Covid-19 yet again hampered thousands of people's festive plans this year thanks to the new Omicron variant, which many have said is more contagious than other strains.
But Crista was determined to have her sibling at the dinner table with the family, so much so that she created a socially-distant see-through plastic tent.
Sharing the solution on the social media platform, she posted a video of her sister inside the bubble alongside her relatives as she enjoys dinner while wearing a Christmas hat.
The clip, set to 'Jingle Bell Rock', was captioned: "When your sister gets covid for Christmas... you get her a bubble!!!"
Elaborating on the unique idea, Crista told Storyful: "My sister got COVID but we still wanted to safely include her in our holiday plans.
"We included my sister in a way that worked for us!"
She went on to explain that the Christmas dinner was only for their nearest and dearest, clarifying that those who were present 'all live together' and 'there were no extended family there'.
The clip has since received a whopping 10.3 million views, as well as thousands of comments.
Although many people praised their ingenuity, some were sceptical that the plastic bubble was safe.
"Yea I don't think that works," wrote one user, while another said: "People will do anything other than stay home and be responsible."
Others were in favour of the idea, including this person who commented: "Don't care what anyone else says. This is very sweet.
"Shows u guys are a very close family and love each other so much."
Following the flurry of opinions, Crista took to the comments section herself to set the record straight.
"You all need to relax," she said. "We all LIVE TOGETHER and all are vaccinated and tested NEGATIVE.
"She was in the bubble to eat and spend little amounts of time in. That is what we as a family chose to do."
Words: Daisy Phillipson
Featured Image Credit: TikTok/@cristalarockMore like this