Virenia Gwendolyn "Nia" Peeples (born December 10, 1961) is an American R&B and dance music singer and actress. Peeples is also famously known as Pam Fields, the mother of Emily Fields on hit TV drama Pretty Little Liars, as Karen Taylor Winters on The Young and the Restless, and as Sydney Cooke on Walker, Texas Ranger. Her most recent role is Grace's mom, Susan, on The Fosters.