“The Big Bang Theory” star Kaley Cuoco certainly knows how to have fun even while working.

The 30-year-old actress shared some videos of her goofing around with some friends while on the set of a photoshoot on her Instagram (@normancook) on Wednesday, Sept. 20. In one of the clips, Cuoco showed off her curves and some major side boob in a revealing white tank top while rocking out with celebrity hair stylist Adir Abergel.

The actress and her pal gave it their all while they lip-synched to a song playing in the background. However, makeup artist Jamie Greenberg interrupted their “performance” when she suddenly appeared on screen. Cuoco obviously wasn’t impressed with her pal’s interruption, captioning the clip: “As usual @jamiemakeupgreenberg ruins everything.”

Cuoco also shared a sneak peek of her photoshoot, along with the caption: “Amazing shoot today!!!! Thank you squad!!!” Check out Cuoco’s latest Instagram posts below!

Meanwhile, “The Big Bang Theory” returned to CBS on Monday, Sept. 19. In the Season 10 premiere of the long-running comedy series, Cuoco’s character Penny and Leonard (Johnny Galecki) tied the knot for the second time in a garden wedding ceremony attended by all their friends and family.

The episode, titled “The Conjugal Conjecture,” introduced Penny’s estranged mother Susan (Katey Sagal) and brother Randall (Jack McBrayer). The cliffhanger from “The Big Bang Theory” Season 9, which was whether or not Leonard’s father Alfred (Judd Hirsch) and Sheldon’s (Jim Parsons) mother Mary (Laurie Metcalf) hooked up, got resolved. It turns out the two definitely did not sleep together and only shared a cab. However, the roommates’ parents have already made plans to meet up in the future, and that Mary genuinely likes Leonard’s dad.

Penny and Leonard’s wedding was certainly eventful as well. It seemed to proceed as planned at first, with Bernadette (Melissa Rauch) officiating the ceremony and Amy (Mayim Bialik) playing the harp in the outdoor pavilion where the wedding was held. Penny and Leonard exchanged vows, but right before Bernadette proclaimed them husband and wife, Sheldon interrupted the ceremony. He announced that he has always considered Leonard family and that both him and Penny are important to him. Bernadette then pronounces the three as “husband and wife and weird other husband who came with the apartment.”

Find out what’s in store for Penny, Leonard, Sheldon and the gang when the next episode of “The Big Bang Theory” Season 10 airs Monday on CBS.