While the upcoming crossover between It's Always Sunny in Philadelphia and Abbott Elementary is undoubtedly exciting, let's not overlook another major milestone. The record-breaking comedy is diving into production for its astonishing 17th season. As Glenn Howerton announced today, filming has begun on this long-running series that started with just three kids and a pilot.

 

From Glenn Howerton's Instagram post, "20 years ago, these three kids made a pilot for FX called 'It's Always Sunny in Philadelphia.' Today… 20 years later we start filming season 17. These kids didn't know what they were doing, but they had a vision. Thank you to FX for trusting that vision. Thank you to our fans who preached the gospel from the start. We are eternally grateful."

 

 Source: untetheredrage.com