Kaley Cuoco, who plays Penny in the hugely popular comedy "The Big Bang Theory," has opened-up about getting breast implants done at the age of 18.

In an interview with Cosmopolitan, the actress revealed that she has surgically-enhanced her breasts. At the time, the actress was starring in "8 Simple Rules."

Cuoco is happy that she decided to enhance her breasts and has no regrets about it. She said it is the "best decision I ever made."

In the interview, the actress also opened-up about her relationship with "The Big Bang Theory" co-actor, Johnny Galecki. Cuoco secretly dated Galecki for nearly two years.

"It took a minute, a bit of awkwardness," Cuoco said, talking about their break-up. "By the grace of God, we became best buddies and moved on in such an elegant way. [He's] one of my closest friends."

Cuoco revealed that at her wedding, Galecki was sitting in the front row, with a big smile on his face. "...was in the front row at my wedding, with a huge smile on his face," the actress, 28, said.

Last year, Galecki had said that he and Cuoco are till good friends, and that she is an important part of his life. "We're dear friends, still. Kaley's not just an ex, she's a part of my life," he had said, as quoted by US Weekly.

Cuoco married Ryan Sweeting, a tennis player, on New Year's Eve. The very much in love couple had announced their engagement in September 2013, after only three months of dating each other.

In her interview with Cosmopolitan, the actress admitted that the wedding happened fast. "... but that's who I am," she said, adding that when she and Sweeting met, she knew he was the one.

"[At my wedding], I felt like a rock star and a badass. What was amazing in that room, it was so full of love. It was like nothing I'd ever been to before, and it was exactly what we wanted it to be. It was the eighth wonder of the world, the greatest wedding of all time," the actress said.