'Happy Days' Marion Ross Turns 92 — Scott Baio Pays Tribute to His on-Screen Mother-in-Law

Decades after the hit 1970s show "Happy Days," Scott Baio still has fond memories of his on-screen mother-in-law, Marion Ross, and celebrated her 92nd birthday with a sweet post on social media.

Scott Baio is an actor well-known for his role as Chachi Arcola on the 1970s show "Happy Days." The 60-year-old took to Twitter on October 25 to congratulate his on-screen mother-in-law, Marion Ross, on her 92nd birthday with a heartwarming post.

The "Charles In Charge" star uploaded a picture of himself with Ross at what appeared to be her birthday party. Baio held a cake with a lit candle while the 92-year-old could be seen in the background with a huge smile on her face.

The actor looked casual in a short-sleeved shirt, and Ross could only be seen wearing a necklace with her signature curly red hair. The 60-year-old captioned the post with the words:

"Happy 92nd Birthday to my Happy Days TV mother-in-law and my REAL neighbor, Marion Ross"

It seemed he was the only cast member to show up for Ross' big day as their former co-stars reunited to support the Wisconsin Democratic Party in a virtual fundraiser event.

["Happy Days"] was created by the late Garry Marshall and it remains to date one of the best TV shows.

Ron Howard, Henry Winkler, Don Most, Anson Williams, and D’arcy Carden joined other special guests in reading the script of a popular episode of their hit show. According to sources, Ross didn't participate in the event due to her health, and Baio was also absent as he supports Donald Trump.

The fundraiser was a nostalgic event for the cast members and fans, who shared their joy about the virtual reunion on social media. "Happy Days" ran from 1974-1984 for a total of eleven seasons, and it had several spinoffs.

Last year, the show's main cast, including Howard, Winkler, Williams, Most, and Ross, reunited in November, where they reflected on their time on the show and their friendship over the years.

The late Garry Marshall created the sitcom, and it remains to date one of the best TV shows. The cast members also became fan-favorite actors for their achievements on the show.

Henry Winkler won two Golden Globes and three Emmy nominations for his role as Fonzarelli. Anson Williams earned a Golden Globe nomination for Best Supporting Actor while Ross was nominated twice for Outstanding Supporting Actress in a Comedy Series.