Kaley Cuoco has been in the news this past week with the big announcement that she is engaged to Ryan Sweeting. But now it is her sister’s time to shine. Briana Cuoco, Kaley’s sister and personal assistant, won over Christina Aguilera last night during her blind audition on “The Voice”.

Briana sang Lady Gaga’s, “You and I,” and really impressed the judges. Aguilera was the first judge to turn her chair, followed by Cee Lo Green. “You held those notes out really strong. You made me really happy,” Aguilera said. When Briana picked Aguilera as her coach she screamed, “Girl power!”

Kaley was ecstatic, when she saw that Aguilera had turned her chair. You could see Kaley bouncing up in down backstage and cheering her sister on. She said that no one was more deserving of this than Briana. “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,” she said. “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!”

In true big sister fashion, Kaley immediately stomped the rumors, via Twitter, that “The Voice” was rigged and that was the only reason why Briana made it.

FYI last nights #TheVoice was NOT rigged because I'm @bricuoco sis. She made it ON HER OWN 100%. It's called BLIND AUDITIONS for a reason

— Kaley Cuoco (@KaleyCuoco) October 1, 2013

Aguilera also took to Twitter, after the performance, saying that she is happy to have Briana on Team Xtina.

Loved the way #Bri got the crowd amped during her performance! So happy to have her on #TeamXtina

— Christina Aguilera (@xtina) October 1, 2013

You can watch Briana’s full performance below.

Image via Twitter