Kaley Cuoco cries at the final 'Big Bang Theory' table read: 'Prepare Yourselves'.

The on-screen Penny, Kaley Cuoco is bidding a tear-filled goodbye to The Big Bang Theory.

Marking the CBS sitcom's very last table read before it wraps up for good in May, the actress shared an emotional set of posts to Instagram on Wednesday.

The final script reads "End of series" as she shared a photo captioning it, "Yea, didn’t sleep".

View this post on Instagram Yea, didn’t sleep . @bigbangtheory_cbs A post shared by Kaley Cuoco (@kaleycuoco) on Apr 24, 2019 at 7:09am PDT

Cuoco, 33, followed that up with a photo of her holding the script in her arms as she couldn't contain the tears. She wrote, "Post table read for @bigbangtheory_cbs finale episode."

View this post on Instagram Post table read for @bigbangtheory_cbs finale episode A post shared by Kaley Cuoco (@kaleycuoco) on Apr 24, 2019 at 11:22am PDT

A third picture showed off the many tissues she needed to make it through the read. Kaley captioned, "Prepare yourselves … for a finale that has truly given me a loss for words ❤️ Our whole universe …..."

Co-star Kunal Nayyar (Rajesh Koothrappali) 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."

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The Emmy-winning series premiered in 2007 when Cuoco was just 20 years old. This delightful show that has brought so much laughter and fun over the years is set to end in May with the concluding 12th season.