Kaley Cuoco's sister Briana Cuoco opened up about her sister's engagement and successfully joining Team Christina on The Voice last week after an impressive blind audition.

Briana couldn't contain her excitement about being coached by Christina Aguilera, whom she described as "this tiny, little human with this huge voice" during an interview on Monday. Briana landed on Team Christina during week 2 of season 5 which aired on Sept. 30. She nailed the audition after singing Lady Gaga's You & I.

"To be honest, I thought [Christina] was the last person who would actually turn around and it's just such a compliment coming from her 'cause she's one of the greatest vocalists of all time, you know," Briana told E!'s host Ali Fedotowsky. "I'm just so excited to work with her," she added. "I think in this business you need a little kick in the ass to do that."

Briana admitted she was hoping to have drawn an interest from Adam Levine or Blake Shelton, however, she's confident the experience will help her come closer to achieving her goals as a professional singer.

"You never know how you're going to feel when you go up there ... Either way, with any of them I would've been fine. They're all incredible. The fact that I even had a choice was pretty cool," Briana told E! News.

Kaley and their parents were backstage when Briana auditioned. They cried and jumped up and down for joy as host Carson Daly stood beside them. Briana said during her E! interview that she was happy to get support from her sister and expressed joy for Kaley's recent engagement to tennis player Ryan Sweeting.

"Kaley is that for me and I am that for her, and it was incredible having her there at truly one of the best moments of my life."

As for her sister's engagement, she said she was thrilled for her because she "couldn't have picked a better man for her."

Sweeting popped the question to Kaley three days after their first public appearance on the red carpet at the Primetime Emmys last month. A friend told Us Weekly that although the couple had only been dating for three months prior to when he popped the question on Sept. 25, the Big Bang Theory star feels that he is "the one."

The Voice season 5 returns on Monday, Oct. 14 and Tuesday, Oct. 15 at 8 p.m. EST on NBC

Watch Briana Cuoco's performance of You & I on The Voice season 5.

Tags
The Voice Season 5, The Voice 5, Christina Aguilera, Kaley Cuoco