The actress appeared in 1998's "Bride of Chucky" and 2004's "Seed of Chucky." "Curse of Chucky" is available via digital outlets now and will be released on DVD and Blu-ray Oct. 8, Zap2it.com reported.
"It was really fun to drag out the push-up bra, the 7-inch heels and put on the blonde wig again. Every 10 years or so they let me make another 'Chucky' movie," Tilly told USA Today about reprising her character.
"It's a fantastic moment when Tiffany materializes in the movie," she said. "She is helping him in his nefarious ways. There are people he forgot to kill and he's a perfectionist. He will not stop. He's not going to stop painting the Sistine Chapel before he's finished. He's tying up loose ends."