The 30-year-old actress revealed her hair transformation via a series of Instagram photos on Wednesday as she went from a lob to long, luscious locks.
"It's very important for me to change my look after wrapping each season," Cuoco captioned her first photo on Instagram. "I love playing Penny, but it's good for me to bring it back to Kaley 🙋🏼 last year I chopped it all off - this year I'm doing the opposite."
The actress added that she "can't wait to read all the negative comments" after showing off her new look.
"End result ! Baby's got her hair back :)" Cuoco said, before thanking her hairstylist from "The Big Bang Theory."
Cuoco and her "Big Bang" crew are close to wrapping up Season 9 of the hit TV show. It appears the actress has someone to enjoy her time off with before filming their next season, as Cuoco has been posting pics with a rumored new love interest.