Kirstie Alley's last TV performance is being celebrated tonight (Dec 7) on FOX in the holiday special episode, "Masked Singer Seasonal Sing-A-Long Spectacular!"
Kirstie was Baby Mammoth in Season 7 of "The Masked Singer" and her un-masking was her last TV interview.
The "Cheers" star died Monday after a short battle with cancer. She was 71.
Photo: Getty Images