Doris Hobday's family say they are "totally heartbroken" to lose her in this way.
The UK's oldest identical twins, Doris Hobday and Lil Cox have both tested positive for coronavirus.
Despite, they say, spending most of 2020 inside and sticking to the rules.
The 96-year-old sisters from Tipton posted the news on their Facebook page and urged people to take the restrictions seriously.Copyright: BBC
They wrote: "We are both in shock... we have been inside for most of 2020 sticking to all the rules and being careful, now this has happened and we can’t work out why or where we’ve picked it up from.
"We are writing this hoping we can save people from getting this horrible virus, please, please, please take this seriously - Covid is real and it’s affecting so many lives across the world... don't let it affect yours or your families [sic]."
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