Kaley Cuoco's Sister Stuns with Skimpy Spandex Body-Ody

Scroll for the photo. The above one was shared with Kaley's 6 million Instagram followers over summer 2020 as the twosome got sweaty in L.A. The pair then made headlines for their mandatory, 14-day upstate NY quarantine prior to filming the last of "The Flight Attendant" in NYC.

Bri's snap yesterday came as a selfie, with the star seen crouching down and catching her killer abs and toned shoulders in a skimpy black sports bra and matching leggings, possibly from the Cult LA athleisurewear line she runs.

Bri, who hid her face, but not her physique, kept it indoors and on a mat, writing: "Other medicine" as she threw in dumbbell emoji – and this girl works OUT. Bri made it clear that fitness shopping tops her priorities list over the summer of last year, when paparazzi photos of her and sister Kaley in the Big Apple showed her hitting up popular store Alo Yoga.

Bri, whose Instagram following is modest, but rising, is also known for having appeared in a 2013 episode of "Big Bang." See more photos below!

Being well-connected in Hollywood never hurts, but Kaley has confirmed that she played no part in getting her little sis on "The Flight Attendant," telling "Extra" that the audition was done the standard way.

"My sister got a role, she auditioned on her own. I didn’t even know she was auditioning, by the way," she said. "There's like 20 opinions besides my own... Everyone loved what Bri did, and she actually plays a really pivotal role, so I am thrilled for her and we are living together in Brooklyn like roommates. We've had a blast."

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"The Flight Attendant," an eight-part miniseries that premiered in late November and is produced by Kaley's Yes, Norman Productions, proved a massive hit. The thriller has now been given the green light for a second season, with Kaley's role as Cassandra Bowden set to return. The show, three years in the making, also features "Game of Thrones" star Michiel Huisman and "Dr. Who" face Michelle Gomez.

Kaley, meanwhile, has been, well, defying gravity, butt in the air. Scroll for that one!