Until her death in 2013, she was one of the three surviving munchkins, the other two being Jerry Maren and Ruth Robinson Duccini. When she was helping a relative in a potato chip booth at the Tennessee State Fair, a group of little people came by and asked if she wanted to join their show, Henry Kramer"s Midgets. "At that time I didn"t think I was a midget," says Pellegrini (who then stood about 3 ft 4 in (102 m)).
In the film, Pellegrini played a "sleepyhead" flower pot and Munchkin villager.
Through the years, Pellegrini frequently appeared at surviving Munchkins of Oz festivities. She was present on November 21, 2007 when the remaining Munchkins were given a star on the Hollywood Walk of Fame.
She was also named the Grand Marshal of this year"s annual "Oz-Stravaganza" parade in Chittenango, New York, but health issues prevented her from attending. Near the time of her death, she was described as a widowed great-great grandmother living in Glendale, Arizona, with a room in her house devoted to her treasured Oz collectibles.
She was survived by daughter Margaret, grandchildren William III, Anna, Juliette, Joe, Vincent, and Dawnelle Mowrey.
Great grandchildren are: Anthony, Ashley, Barbara, Cheryl, Dalyn, Elizabeth, Heaven, Kaylee, and Shayla, and one great-great grandchild Sejla,
Pellegrini died on August 7, 2013, in Glendale, Arizona, of complications from a stroke she had 2 days earlier. She was 89. She was cremated and her remains were given to her family.