The beloved sitcom that made stars of Kutcher and Kunis as Kelso and Jackie has debuted a sequel set 20 years later that includes some of the original cast - and the first episode saw the two stars step back into their roles.
Read more: Why isn't Hyde in That 90s Show?
Kutcher and Kunis got married in real life in 2015 and have two sons together, and in That 90s Show their characters Kelso and Jackie are also together.
A cameo scene showed new cast member Mace Coronel, who plays Jay Kelso, introduce himself as Kelso and Jackie's son before his parents turned up, too.
Kelso and Jackie were on their way to get married to each other for the third time, much to the horror of returning character Red (Kurtwood Smith) and his wife Kitty (Debra Jo Rupp).
One fan tweeted: "not a one minute cameo from mila and ashton in that 90s show immediately eating up the newbies I'm obsessed"
Someone else added: "aghhh mila kunis and ashton kutcher showing up in that 90s show together!!"
Another viewer wrote: "That 90s show fixed the terrible ending of that 70's show by breaking up Fez and Jackie and giving us Jackie and Kelso with a mini Kelso"
Fans were impressed by how much Jay looked like his dad, with one person tweeting: "whoever is in charge of casting That 90s Show deserves a raise for how much Kelso’s kid looks like Ashton Kutcher"
Someone else added: "they really did find someone that looked like he could be ashton kutcher’s son for that 90s show"
The sequel was a hit with viewers, as one person tweeted: "That 90s Show is a masterclass on how sequels should be done"
The sitcom also includes cameos from other That 70s Show former stars, including Orange Is The New Black's Laura Prepon as Donna and Wilmer Valderrama as Fez.
That 90s Show is currently streaming on Netflix.