Updated: Sept. 21, 2018 at 7:04 AM

'Will & Grace' turns 20: The cast through the years (69 images)

The first episode of "Will & Grace" aired 20 years ago on September 21, 1998. Here's a look back at the cast through the years.

Messing (R) and Will Chase of "Nashville" arrive on the red carpet at the 67th Annual Tony Awards held at Radio City Music Hall on June 9, 2013 in New York City. File Photo by Monika Graff/UPI

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Messing arrives for the Crystal + Lucy Awards in Beverly Hills, Calif., on June 12, 2013. File Photo by Jim Ruymen/UPI

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Hayes, the voice of Terri in "Monsters University", attends the premiere of the film in Los Angeles on June 17, 2013. File Photo by Jim Ruymen/UPI

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Mullally attends the 2013 Primetime Creative Arts Emmy Awards in Los Angeles on September 15, 2013. File Photo by Jim Ruymen/UPI

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