See How the 'Big Bang Theory' Cast Celebrated Their Major Milestone (PHOTOS)

Zoe Jewell
Sonja Flemming/CBS

The Big Bang Theory is officially ending after 12 long seasons, but it’s still passing records in its final weeks on-air.

In fact, the CBS series just became the longest-running multi-camera sitcom in the history of television, passing the hit show Cheers.

Johnny Galecki & Kaley Cuoco Get Silly to Celebrate the 'Big Bang Theory's Final Episodes (PHOTOS)

Johnny Galecki & Kaley Cuoco Get Silly to Celebrate the 'Big Bang Theory's Final Episodes (PHOTOS)

The co-stars and on-screen spouses had fun ahead of the show's big farewell.

While Cheers ran for whopping 275 episodes, The Big Bang Theory just went into production on episode 276!

The cast celebrated the milestone moment on Wednesday, March 27 with a number of cupcakes that spelled out “276.”

Today marks a BIG TV milestone! The #BigBangTheory is officially television's longest-running multi-camera comedy EVER, exceeding Cheers’ previous record of 275 episodes!” the show’s Twitter account shared.

The cast, including Kaley Cuoco, Johnny Galecki, and Mayim Bialik, also thanked the fans for getting them to number 276.

The Big Bang Theory’s final episode is set to air on Thursday, May 16.

The Big Bang Theory, Thursdays, 8/7c, CBS