* Series 1-2 (2010-2011): During the initial series, Tracy has shoulder-length hair, styled with a side fringe. Her hair colour is dark brown, and she often wears it down with a slight wave.
* Series 3 (2012): In the show's third series, Tracy's hair is kept at a similar length to the first two. However, the fringe is styled differently, appearing to be thicker and straighter across her forehead.
* The Beaker Girls (2021-2023): As an adult, Tracy's hair is significantly longer, reaching past her shoulders. She still maintains a dark brown colour, but often styles it with looser waves or curls. Occasionally, she wears her hair tied up in a ponytail or bun.