John Stamos thinks 'Mary-Kate's sister' was 'incredible' on 'WandaVision'

• John Stamos said Elizabeth Olsen was "incredible" on her Disney+ show, "WandaVision."
• He remembers her as a "little girl" and said it's "remarkable" what she's done with her career.
• Stamos was a "Full House" costar to Olsen's older sisters, Mary-Kate and Ashley, from 1987 to 1995.

John Stamos says he typically doesn't watch many Marvel movies or TV shows - but he did make an exception for "Mary-Kate's sister," Elizabeth Olsen, and her show "WandaVision."

Stamos spoke warmly of Olsen's Emmy-nominated performance during a chat with Insider in July to promote his new true-crime podcast "The Grand Scheme: Snatching Sinatra."

"I watched a little bit of Mary-Kate's sister on there. It was really cool," Stamos said about "WandaVision."

"She was incredible," he added when asked what he thought of Olsen's acting on the series.

Olsen reprised her role as Wanda Maximoff, or the Scarlet Witch, in the popular Disney+ show. The nine-part limited series takes place about a month after the events of the 2019 movie "Avengers: Endgame" and follows Wanda and her husband Vision (played by Paul Bettany) as they try to live a seemingly peaceful suburban life.

Stamos has known Olsen for far longer than Marvel has been around

The "Big Shots" actor was a longtime costar to Olsen's older sisters, Mary-Kate and Ashley, for eight seasons on "Full House" from 1987 to 1995, which is probably why he's so quick to think of her as "Mary-Kate's sister." The famous twins shared the role of Michelle Tanner while Stamos played their Uncle Jesse on the beloved sitcom.

"I've seen her in a couple of things now. I knew her when she was a tiny little girl. It's remarkable what they've all done," Stamos said about Olsen and her sisters.

Stamos reprised his role as Uncle Jesse in the 2016 Netflix "Full House" reboot, "Fuller House" (which ran for five seasons and came to an end in 2020) but Mary-Kate and Ashley didn't appear.

The show addressed Michelle's absence by saying that she was busy running a successful business in New York City, seemingly a reference to Mary-Kate and Ashley's real-life pivot into the fashion industry.

According to "Fuller House" executive producer Bob Boyett, the Olsen twins couldn't play Michelle in the reboot because of their busy schedule running their fashion label, The Row. Boyett also said that Ashley told him that she no longer feels comfortable being in front of the camera.

During his chat with Insider in July, Stamos said that Mary-Kate and Ashley's absence from "Fuller House" was "blown out of proportion" and added that he's "proud" of what Mary-Kate and Ashley have done since "Full House" ended.

"It's really inspiring. It's just strange to think of them as those little kids," he said. "Now they're such smart, powerful, important women. And they were smart, powerful, important kids too, but it's just great to see."