More than 15 years after the conclusion of That '70s Show, Mila Kunis returned to set to film a guest appearance for That '90s Show. Original cast members Ashton Kutcher, Topher Grace, Laura Prepon, Wilmer Valderrama, Kurtwood Smith, Debra Jo Rupp, and Tommy Chung will also appear in the anticipated sequel. In July, Kutcher, who has been married to Kunis since 2015, told EW that filming for the new series was "super nostalgic" and "really odd." Now, Kunis has shared what returning to the set where she and Kutcher met was like for her, telling Access:

"It was weird to shoot together, I will tell you. It made me super nervous. Oh my God, I was more nervous doing that than anything else in my career — was to shoot with my husband on the set of '70s show. 'Cause the set is exactly the same. To be married, but to be at the place where we met — and it looks the same — was trippy. We walked on set and I was like, 'Oh … this is weird.' It was really weird."

Kunis and Kutcher will both appear as guests on the revival, reprising their roles of Jackie Burkhart and Michael Kelso. While their characters were romantically linked through the series' fourth season, the two did not fall in love off-camera until 2012. That '90s Show marks the first time the two film together as a married couple. Kunis said:

"I would look at my husband while we were doing a scene or rehearsing and be like 'Oh my God, that's what you look like when you act.'"

Related: That '90s Show Has Wrapped Filming Reveals Series Star Callie Haverda

That 90s Show: An Homage To Its Predecessor

That '70s Show aired for eight seasons on Fox from 1998-2006. That '90s Show picks up two decades later, in 1995, when Donna and Eric's teenage daughter Leia (Callie Haverda), visits her grandparents Kitty and Red for the summer. The two still live in the same home in the fictional town of Point Place, Wisconsin. Series newcomers include Haverda, Ashley Aufderheide, Mace Coronel, Maxwell Acee Donovan, Reyn Doi and Sam Morelos.

Kunis believes that fans of That '70s Show will be pleased with the revival:

"It is very cute. It's very sweet. It pays homage to — anyone who's ever watched '70s or loved That '70s Show, they will be really happy with it. I really, truly believe it."

Up next, Kunis will appear in Luckiest Girl Alive, based on the New York Times bestseller by Jessica Knoll. Kunis plays Ani FaNelli, a prosperous New Yorker with "a sought after job, a killer wardrobe, and a dream Nantucket wedding on the horizon," whose life takes a turn when a secret from her past is revealed. Luckiest Girl Alive will be released in select theaters September 30 before becoming available on Netflix October 7.