Mila Kunis and Seth Green chat with ET’s Cassie DiLaura on the red carpet at Paleyfest for 'Family Guy's 25th anniversary. Mila opens up about why she won’t make an appearance for season 2 of 'That 90s Show' after making a cameo alongside her husband, Ashton Kutcher, in season 1. Mila and Seth, who worked together on 'That ‘70s Show,' also react to knowing each other for 25 years and working alongside each other on 'Family Guy' voicing the characters of Meg Griffin and Chris Griffin. Plus, Mila reveals the age when she'll allow her 10-year-old daughter, Wyatt Isabelle, to finally watch the show.