Erin Moran who famously played Joanie Cunningham on "Happy Days" and its spinoff "Joanie Loves Chachi" has died ... TMZ has learned.
Moran shot to spotlight in the early 70s when she was cast on "Happy Days" as Joanie, the younger sister of Ron Howard's character. She continued the role in 1982 alongside Scott Baio in "Joanie Loves Chachi" but the show only lasted one season
'Happy Days' Star Erin Moran Dead At 56 | TMZ.com