• "The Big Bang Theory" stars Kunal Nayyar, Simon Helberg, Jim Parsons, Johnny Galecki, Melissa Rauch and Kaley Cuoco are on stage during the 23rd annual A Night at Sardi's.

"The Big Bang Theory" stars Kunal Nayyar, Simon Helberg, Jim Parsons, Johnny Galecki, Melissa Rauch and Kaley Cuoco are on stage during the 23rd annual A Night at Sardi's. (Photo : Reuters/Mario Anzuoni)

Kaley Cuoco and Ryan Sweeting announced that they are getting a divorce, on Sept. 25, Friday, which was four days after "The Big Bang Theory" season 9 premiered on CBS. After the divorce announcement, Cuoco was spotted having a good time with friends.

On Sept. 27, Sunday, Cuoco was with her friends in Calabasas, Calif., and she appeared to be having fun with them, according to Just Jared. On the same day, the "Big Bang Theory" star took to Instagram to share a photo of herself and her friends.

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"I have the greatest friends and family on this earth!!" Cuoco captioned the photo, which indicates that she is single again but happy.

Cuoco and Sweeting announced that they are getting a divorce after almost 21 months of marriage. The two reportedly were not in good condition even before their divorce announcement.

"The few times Kaley and Ryan were out together recently, the tension was noticeable," a source told People. "You could tell the honeymoon phase had ended. It seemed they were trying to work out their marriage by going on dates, but they both seemed miserable." 

Aside from playing Penny in "The Big Bang Theory" season 9, Cuoco is also set to star in "Alvin and the Chipmunks: The Road Chip" lending her voice to Eleanor along with Anna Faris as Jeanette, Bella Thorne as Ashley, Matthew Gray Gubler, Christina Applegate as Brittany, Justin Long as Alvin and Jesse McCartney as Theodore, among others.

Cuoco has also completed Matthew McDuffie's comedy drama "Burning Bodhi," which also stars "The Haunting in Connecticut" actress Virginia Madsen and "Pretty Little Liars" star Sasha Pieterse.