Her father is actor George Eckstein.
She is the stepdaughter of Guy Raymond.
Hallie has appeared in three different series with Frankie Muniz; Lizzie McGuire, Sabrina the Teenage Witch, and Malcolm in the Middle.
Hallie is married to Glenn Withrow.
She is the daughter of actress Ann Morgan Guilbert.
Hallie's nickname is Hal.
Some people mistake her name for Haylie.
Hallie wears square-framed glasses.
Hallie has blonde hair, brown eyes and pale skin.
Hallie: I must admit, it does take me quite a while for me to understand the boundaries and principals of the character I'm playing.
Hallie: Lizzie McGuire is simply a nice, easy-going show for children and I think it is going to be talked about for years to come.