Robert Carradine, 69, who played the dad in Lizzie McGuire over 20 years ago looks UNRECOGNIZABLE

Robert Carradine looks very different 20 years after his appearance on the show Lizzie McGuire.

Hilary Duff starred in the Disney Channel cult classic alongside Carradine who played Lizzie’s father, Sam McGuire.

The 69-year-old former Revenge Of The Nerds actor reunited with his co-stars in a new video for Living Lizzie: A Very McGuire Podcast, appearing unrecognizable from his character on the show.

The podcast reviews episodes from Lizzie McGuire and discusses all things related to the beloved series while occasionally inviting guests over.

The sessions are released in audio and video format through their YouTube channel.

40 years apart: It’s been nearly four decades since Robert Carradine donned the horn-rimmed glasses and pocket protector as Lewis Skolnik in the 1984 comedy classic Revenge of the Nerds – Pictured right in 2020

The laid-back podcast was created by Jake Thomas, 33, who played Lizzie’s brother Matt, and Davida Williams, 36, who played Lizzie’s rival, Claire Miller.

During the show, Carradine sat on the couch and wore a leather jacket over a black outfit.

Fans had a rare chance to see Robert’s current appearance as his social media accounts are filled with old photos of himself and his family with no recent photos.

The actor was excited to catch up with his former child co-stars. His locks are now gray, but he has kept his trademark trademark glasses.

‘How are you? It’s been a while,’ said Jake. before Robert kindly replied, “Good. You look 20 years older.”

“Ah,” Jake moaned jokingly. “Don’t remind me.” Robert nodded in agreement before adding, “Me too, right?” he asked. ‘I mean yes.’

During the discussion, they talked about how they got their famous roles.

Robert confessed that when he first tried out for the show, he didn’t believe he had any chance of being chosen as part of the cast.

The Movie: Hilary Duff starred in the Disney Channel cult classic alongside Carradine playing Lizzie’s father, Sam McGuire – pictured in The Lizzie McGuire Movie 2003

Reunion: In 2019, Hilary Duff posted a photo from Lizzie McGuire’s set to Disney+. She wrote, “We are standing in what will soon become McGuire’s living room. What’s up fam. We doin this’ – Pictured (L-R): Hallie Todd, Jake Thomas, Duff, Robert Carradine

Rare getaway: Donelle Dadigan (L) and Carradine arrived at The Hollywood Museum on September 25, 2019 to celebrate Gilligan’s Island’s 55th anniversary

He shared that he was initially surprised when he received an invitation to return to the studios in West Los Angeles after leaving, but was eventually selected.

In 1984, Robert achieved major success with the comedy film Revenge of the Nerds, in which he played the lead role of Lewis Skolnick, the ultimate nerd.

He played the same character again in the movie sequel and two TV shows.

In 2012, Quentin Tarantino chose Robert to play the role of a tracker in his movie Django Unchained.