Big Bang Theory actress Kaley Cuoco 's sister Brianna Cuoco impressed everybody with her performance on the blind audition of The Voice. The younger Cuoco wowed the coaches and the audience with her soulful rendition of Lady Gaga's 'You and I' while sister Kaley went from one emotion to another throughout her performance.

Kaley was seen praying, cheering and jumping for Brianna and when two out of the four coaches, Christina Aguilera and Cee Lo Green turned their chairs for her, Kayle shed some really soulful tears of joy over her sister's first step to success.

Kayle's these words sum up her joys and dreams for her sister, "I've been waiting for something like this for so long for her. She's deserved this her whole life and she's always put herself on the back burner for everyone else. And this is her time now."

"There's no one I love more in the world. My sister and I are closer than close... I want this for her probably more than she maybe wants it. I'm just really, really excited," gushed the proud sister.

Christina Aguilera praised Brianna profusely and said, "She kept my attention, which is important in the blinds." Brianna was spoilt for choice between Christina and Cee Lo but eventually teamed up with the former, who had earlier remarked that Bri had "power and raw talent."

Brianna, 24, has worked as the personal assistant to her sister and that is why the Big Bang Theory stars were not surprised with her musical talent or success at The Voice. Kayle's costar Mayim Bialik complimented Brianna saying, "She has a beautiful voice. She is phenomenal. She's very, very talented."

As per what the new Cuoco prodigy feels about her brush with real fame, her tweet pretty much sums it up, ""Wow wasn't at my phone all afternoon and seeing everyone's support for #thevoice when I get back is incredible!!! THANK YOU," she tweeted.