Kaley Cuoco's sister appears on The Voice

Kaley Cuoco's sister stepped out of the actress' shadow as she appeared on TV talent show The Voice on Monday (23Sep13).

The Big Bang Theory star featured alongside her little sister Briana in an episode of the singing contest, which features Christina Aguilera, Cee Lo Green, Blake Shelton and Adam Levine as judges.

In the clip, host Carson Daly gives Briana the good news that she has won a chance to audition for the judges.

Meanwhile, Kaley's Emmy-winning co-star Jim Parsons has admitted he's a big fan of Briana, telling Access Hollywood, "She is great (at) a lot of things. We give Kaley a lot of hell like, 'Oh so finally the world is going to see the really talented Cuoco!' Which is not true - we just want to give her s**t!"