Hillary ClintonHillary Diane Rodham ClintonWarren defends, Buttigieg attacks in debate that shrank the field Democrats fear Ohio slipping further away in 2020 Poll: Warren leads Biden in Maine by 12 points MORE on Tuesday wished her Twitter followers a merry Christmas with a holiday greeting that included a decades-old image of her family's time in the White House.

In a tweet, the former secretary of State and first lady shared an image of herself, former President Clinton and their daughter Chelsea Clinton enjoying Christmas in the White House.

It wasn't immediately clear what year the photo was taken, as the Clintons held Christmas celebrations in the White House every year from 1993 to 2000.

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"Merry Christmas to everyone celebrating today!" Hillary Clinton, who was the Democratic Party's 2016 nominee for president, wrote on Twitter.

Clinton has not ruled out a 2020 run against President TrumpDonald John TrumpWarren defends, Buttigieg attacks in debate that shrank the field Five takeaways from the Democratic debate in Ohio Democrats debate in Ohio: Who came out on top? MORE, and told Recode's Kara Swisher in October that she still would like to be president, though she has shown disdain for the idea of running a campaign.

"The work would be work that I feel very well-prepared for having been in the Senate for eight years, having been a diplomat in the State Department," she added of the work to be done after a Democrat "hopefully" ousts Trump in 2020.

Other Clinton advisers told The Hill in October that the former secretary is unlikely to mount a third presidential bid.

“She’s not running. I think it would be pretty damn clear if she was," one confidant said at the time.