Aunt Fanny is Nanny's sister on Muppet Babies. If Nanny is unavailable to look after the Babies for whatever reason, Fanny will be tasked with watching over them. Fanny wears striped purple socks, purple shorts and high-top sneakers, in contrast to her sister, who wears striped green socks, purple dress and ankle sneakers.
She appeared in the third season episode "Around the Nursery in 80 Days". In this episode, the Babies were upset to hear that Nanny was going on vacation -- but they perked up when they discovered that Aunt Fanny would be taking care of them.