9:41 PM PT -- Denise's family tells TMZ ... she passed away in her hospital room Wednesday evening around 10:30 PM Colorado time.
We're told several visitors came by her room on Wednesday to share memories and say their final goodbyes.
Denise was 62.
Denise Nickerson, who played Violet in "Willy Wonka & the Chocolate Factory," is living out the last moments of her life, because her family tells us they have just taken her off life support.
Nickerson, who suffered a stroke last year, was at home Monday and, according to her family, she got into her meds at home and took as many as she could. Her family came to check on her shortly thereafter and rushed her to the ER.
Once in the hospital, doctors diagnosed her with pneumonia. On Tuesday, she suffered a massive seizure and doctors put Denise on life support.
Her condition continued to worsen and her family tells TMZ they have now taken her off the respirator, which facilitates breathing and removed her IVs and stopped giving her medicine.
The family says it's now just a matter of time before Denise passes. Her son, Josh, and his wife are at the hospital with Denise, and have started a GoFundMe to honor Denise's last wishes of being cremated, and her ashes turned into glass artwork.
In addition to 'Willy Wonka,' Denise played Allison on "The Electric Company." She also appeared on "Dark Shadows" and an episode of "The Brady Bunch."
Denise left acting behind in 1978 and eventually got a job working in a doctor's office.
Denise, who is 62, has one son and daughter-in-law, who've been caring for her.