Christy Knowings is best known as a Nickelodeon actress/comedian. Her credits are fairly limited, but include:
TV Shows:
All That — regular cast member (early 2000s)
Taina — guest appearance
The Nick Cannon Show — guest/as herself
Movies:
The Brothers (2001)
She is primarily remembered for her work on All That.
If you meant Chris Knowings instead, he’s the actor known for playing Lamar on Taina and also appearing on All That.