‘Big Bang Theory’
Penny (Kaley Cuoco) and Leonard (Johnny Galecki) have been chosen as Amy’s (Mayim Bialik) maid of honor and Sheldon’s (Jim Parsons) best man, respectively in “Big Bang Theory” Season 11. CBS

Kaley Cuoco recently revealed that she had seven hair changes in this week’s episode of “Big Bang Theory” Season 11.

On her Instagram account, the actress shared a photo of herself from the set of the sitcom. In the snap, Johnny Galecki, Kunal Nayyar and Simon Helberg are reading their scripts with the staff of “Big Bang Theory.” Cuoco was smiling directly at the camera instead of listening to her co-stars’ discussion.

“Big Bang Theory” Season 11, which returned to CBS on Thursday after a short hiatus, centered on Amy (Mayim Bialik) and Sheldon (Jim Parsons) deciding on who should be their maid of honor and best man.

The couple employed some scientific methods to help them with their decision, and they also made sure to set aside their emotions. Penny (Cuoco), Leonard (Galecki), Bernadette (Melissa Rauch), Howard (Helberg) and Raj (Nayyar) were all unaware that they were tested throughout the day.

Howard’s status as Sheldon’s best man shot up after he handled a fried rice situation with ease. Penny’s ranking in Amy’s tally sheet also increased after she managed to deliver a sewing kit in less than one minute.

But Amy and Sheldon decided to open both titles to their male and female friends. This meant that Sheldon’s best man could be a woman, and Amy’s maid of honor could be man.

Meanwhile, Amy and Sheldon’s friends soon realized that they were being put to the test. They decided to tell the couple that they won’t take part in their wedding. Sheldon is upset over the fact that he only has Stuart (Kevin Sussman) left.

But after apologizing for tricking his friends, Leonard told Sheldon that he should make the decision on who should be his best man. And not surprisingly, he chose Leonard. Penny declared that she will be Amy’s maid of honor even before the latter asked her, and Amy agreed that this is what she wanted in the first place.

Leonard’s best man was also Sheldon, and Penny’s maid of honor was also Amy during their wedding in Season 10.

“Big Bang Theory” Season 11 airs Thursdays at 8 p.m. EST on CBS.