Singer Fergie may be riding high with the Black Eyed Peas and her own solo music career these days, but one of her first showbiz gigs was lending her voice to the Peanuts cartoons.

“My mom has them all on tape,” the singer told Playboy magazine in a new interview. “I was Sally for two years and Lucy for one.”

The singer, born Stacey Ann Ferguson, was just nine years old when she signed up to voice the character of Sally, Charlie Brown’s bossy little sister, in the 1984 episode It’s Flashbeagle, Charlie Brown, later becoming the voice of Lucy, Charlie’s equally bossy friend.

After three years on the iconic cartoon, Fergie won her breakout role in the hit TV show, Kids Incorporated, which also starred Jennifer Love Hewitt.

It’s certainly a far cry from the singer’s latest acting role, as a zombie-battling babe in the gruesome Robert Rodriguez and Quentin Tarantion double feature, Grindhouse.