Shannen Doherty was feeling "grateful" as she returned to work this week following her battle with cancer.

The 46-year-old actress started filming the "Heathers" series with Selma Blair on Tuesday after announcing she's in remission from cancer.

"Was back on set today," Doherty captioned a photo on Instagram.

"It's been a rough two years. Fighting cancer. As an actor, people bench you. They assume you're to weak, not able etc. etc. and yet it's something like work that invigorates and renews strength to conquer the unimaginable beast."

"I compared myself to a car today," she added. "That vintage Shelby that's been in the garage too long. It's still a great car. The best. Just needs time for the engine to warm up and it's good to go. Performing like it's supposed to."

"I'm grateful for today. Grateful for everyday," the star said. "Thank you @heathers for letting me play and be someone else today. Great crew, great writers, great cast, great show, great director. #paramountnetwork2018."

Doherty played Heather Duke in the original "Heathers," which opened in theaters in 1989. The movie is being adapted as a television reboot starring Doherty, Blair and Grace Victoria Cox, and will premiere on Paramount Network in 2018.

"I am loving my wardrobe on #heathers, except the part where my butt keeps flying out of my costume. So, I will show off this part instead. #sparkly #trailernap #setlife #paramounttv," Blair captioned a picture from set Wednesday.

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Doherty was told she's in remission in April after being diagnosed with breast cancer in 2015. She shared a photo of her "sexy Parisian" pixie cut Monday as her hair continues to grow back after chemotherapy.