The singer will play Isabella Roarsome in new Disney cartoon series, which begins next month. The show follows the adventures of five-year-old monster Henry.
Halliwell, 40, plays a monster pop star in the show who is never seen without a gold tutu and matching bling whenever she is seen around the fictional town of Roarsville, the Daily Mail reported.
"Being involved in Henry Hugglemonster has been such a joy. The show has a truly positive message, teaching kids to be themselves and reminding them of the importance of family values," Halliwell said.
"What's more, it's been so lovely to share this experience with my own daughter, who helped me learn the songs for my role as Isabella."
The show has been developed from a series of books created by Ireland's Children's Laureate Niamh Sharkey.
