The series will end its 12-season run in May

By Rachel DeSantis
April 24, 2019 04:55 PM

Kaley Cuoco is saying a tear-filled goodbye to The Big Bang Theory.

The actress, who plays Penny on the CBS sitcom, shared an emotional set of posts to Instagram on Wednesday marking the series’ very last table read before it wraps for good in May.

“Yea, didn’t sleep,” she captioned a photo of the final script, which reads, “End of series” across the front.

Cuoco, 33, followed that up with a photo of her holding the script in her arms as the tears flowed.

“Post table read for @bigbangtheory_cbs finale episode,” she wrote.

A third picture showed off the many tissues she needed to make it through the read.

Kaley Cuoco Instagram Big Bang Theory
Credit: Kaley Cuoco/Instagram

“Prepare yourselves … for a finale that has truly given me a loss for words ❤️ Our whole universe …..,” she captioned the post.

Costar Kunal Nayyar also shared the final script on Instagram, writing, “Just read the final episode… Gnite #tbbt.”

Johnny Galecki, who plays Leonard, commented, “Roughest page ever read. XO.”

The Emmy-winning series premiered in 2007, when Cuoco was just 20 years old, and will end in May at the conclusion of season 12.

RELATED VIDEO: Johnny Galecki Says ‘Everybody’s Very Comfortable’ with The Big Bang Theory Ending in Season 12

Last month, The Big Bang Theory surpassed Cheers as the longest-running American multi-camera sitcom when it aired its 276th episode.

Cuoco celebrated the milestone on Instagram, sharing a cast photo of everyone gathered around a tray of cupcakes spelling out “276.”

Credit: Kaley Cuoco/Instagram

“Blessed, humbled, amazed, grateful. Thank you to everyone who has supported us the last 12 years. 💥 THANK YOU!” she captioned the post.

According to Entertainment Weekly, CBS was trying to negotiate two more seasons, but star Jim Parsons was ready to say goodbye to the sitcom — and there’s no show without Dr. Sheldon Cooper. (CBS had no comment, and a rep for Parsons did not respond to PEOPLE’s requests for comment at the time, but Parsons addressed the show ending with a lengthy note on Instagram, saying he will miss “all of this more than I can say and more than I can know at this time.”)

Cuoco revealed in January that she shared a highly emotional moment with Galecki just before the show went on holiday break.

The Ellen DeGeneres Show
Credit: Michael Rozman/Warner Bros.

“We’ve been getting super emotional,” the actress told Ellen DeGeneres. “We were just blocking, and we’re the only two in it, just kind of rehearsing the scene, and out of nowhere, I just started bawling.”
Cuoco continued: “The crew, the camera guys, they come out and they’re like, ‘We’re so glad you cried because we’ve been waiting to cry,’ and they all gave us this huge group hug, and we just all cried for like 10 minutes.”

The star also said in February that she has plans to take a little piece of the series home with her following the filming of the final scene: the photo of two robots in a wrestling ring that hangs on a door in Leonard and Sheldon’s apartment.

“It’s something that I love so much and I’ve looked at it for 12 years,” she told reporters. “It’s always in my eyeline from where I sit in the living room set, so I’m glad I’m going to put it in my own living room so I’ll see it forever.”

The Big Bang Theory airs Thursdays at 8 p.m. ET on CBS.