Mayim Bialik just took throwback Thursday to a whole new level.
The Big Bang Theory actress shared a snapshot from 1990, in which she appears with Friends star Jennifer Aniston.
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In the photo, she and Aniston are all smiles, hugging each other tightly, as best friends do.
"Yes this is me and Jennifer Aniston in my childhood bedroom," she captioned the vintage pic. "We did a show together before I did Blossom. #tbt"
That show was titled Molloy. Bialik was cast as the lead character, 11-year-old Molloy Martin, while Aniston played her older teen stepsister, Courtney. The show marked Aniston's debut TV appearance.
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Though the sitcom only aired on Fox for two months -- July 25, 1990 through August 29, 1990 -- at least the two were able to document some unforgettable memories from their time working together.
While Aniston has been the star of Bialik's social media accounts, her husband, Justin Theroux, has been making his own statement.
On Wednesday, The Leftovers actor joined Instagram and posted his first photo to the site.
"#on," he captioned the smoldering black-and-white selfie.
WATCH: Jennifer Aniston & Justin Theroux Make First Public Appearance as a Married Couple
Theroux, 44, and Aniston, 46, tied the knot at their home in Bel Air, California, in a ceremony disguised as a birthday party for Theroux. Ever since they wed, the two haven't been able to stop gushing over their love for each other in interviews, including our own.
ET caught up with Theroux last month at Activision for the launch of the game, Call of Duty: Black Ops III, where he revealed the compliment his wife hears most frequently: "She's beautiful."
"Not to be corny, but it's true," he said. "So I constantly say that."
Watch the video below to hear more.