Sonya was a hair stylist who appeared in "The One Where Monica Sings", portrayed by Lori Alan.
When Joey became worried about the appearance of his eyebrows and knuckles, he was styled by Sonya under the name Chandler Bing. Sonya assumed he was gay, and had difficulty plucking his eyebrows when he found it extremely painful. She ended up only plucking one eyebrow due to the pain, leaving Joey with mismatched eyebrows.