Erin Moran and Paul Parisi in Love (2015)

Henry Winkler, Marion Ross, Tom Bosley, Erin Moran, Don Most, and Anson Williams in Happy Days (1974)

Ron Howard, Henry Winkler, Marion Ross, Tom Bosley, Erin Moran, Don Most, and Anson Williams in Happy Days (1974)

Ron Howard, Marion Ross, Tom Bosley, Erin Moran, and Randolph Roberts in Happy Days (1974)

Kevin Burchett, Erin Moran, and Mitch Vogel in Death Valley Days (1952)

Scott Baio and Erin Moran in Joanie Loves Chachi (1982)

Lee Horsley and Erin Moran in The Love Boat (1977)

Erin Moran and Eric Scott in The Waltons (1972)

Scott Baio, Derrel Maury, Erin Moran, and Robert Pierce in Joanie Loves Chachi (1982)

Scott Baio, Marion Ross, Tom Bosley, and Erin Moran in Joanie Loves Chachi (1982)

Tom Bosley and Erin Moran in Happy Days (1974)

(Front row, left to right) Tony Dow, Erin Moran, Adam Rich, Ron Palillo, Charlene Tilton, Eddie Mekka, Ernest Thomas, Fred Berry, Barry Livingston,  (second row, left to right) Rodney Allen Rippy, Butch Patrick-Lilly, Willie Aames,  Jeremy Miller, Jay North, Chris Knight, Haywood Nelson, (third row, left to right) Barry Williams, Todd Bridges, Paul Petersen, Jeff Conaway and Leif Garrett as themselves

Henry Winkler, Danny Butch, and Erin Moran in Happy Days (1974)

Ron Howard and Erin Moran in Happy Days (1974)

Ron Howard, Henry Winkler, Marion Ross, Tom Bosley, Joyce Brothers, Erin Moran, and Anson Williams at an event for Happy Days (1974)