Kaley Cuoco celebrates her 30th birthday on 30 November, 2015. The actress best known for her role as Penny in "The Big Bang Theory" has had quite an eventful year so far. And we surely think the girl deserves a big bash.

Kaley's 30th birthday celebrations have already started with a vacation with her best friends at an animal sanctuary maintained by the Black Jaguar and White Tiger foundation. But fans speculate she may have a quite celebration with co-star Johnny Galecki aka Leonard, whom she is rumoured to be dating.

Well, it looks like Kaley Cuoco is finally moving on from her divorce with Ryan Sweeting, and it's no surprise dating rumours with Johnny Galecki have been running wild again since her split.

As we all know, Kaley and Johnny used to date before she tied the knot with Ryan. But in September it came out that Cuoco had decided to end her marriage of 21 months to Ryan, and reports started buzzing that "The Big Bang Theory" co-stars were getting back together.

The two actors have maintained that they are still good friends.

Johnny Galecki wrote: "No scandals / home wreckers / pregnancies here, y'all. Just profound friendship. @normancook (sic)"

Cuoco also wrote: "So sorry to disappoint, but no home wreckers or secret flings going on here. Me and @sanctionedjohnnygalecki are just the best of buds- Leonard and Penny will just have to suffice!!! (sic)"

Despite the actors' claims, fans still believe Johnny may have something special planned for Kaley.

Kaley has given major clues that she is moving on strongly after her divorce. Recently, she even went to a tattoo artist to cover up the tattoo of her wedding date inked in Roman numerals.

Cuoco posted on her Instragram: "Thank you @nero_sct @studiocitytattoo for helping me right my wrongs. Note to self – do not mark your body with any future wedding dates #under30mistakes #donttakeyourselftooseriouslykids. (sic)"

Like we said, a lot has happened this year for Kaley Cuoco. All we can do now is wish our lovely Penny from "The Big Bang Theory" a very happy birthday.