Tim Allen, Kelsey Grammer, and More Stars of Your Favorite 90s Sitcoms — Then and Now!

It's hard to believe the golden age of 90s sitcoms ended 20 years ago! Many of our favorite TV stars have moved on to other shows and projects, and a few of them have even disappeared entirely. Curious to see what they look like now?

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Click through the gallery to see then and now pics of your favorite 90s sitcom stars.