Heather appears in one episode, "Lilly's Mom Has Got It Goin' On," where she briefly dates Miley's father, Robby.Lilly's parents are divorced, and her father, Ken Truscott is an accountant. In "Miley Get Your Gum," Lilly refers to her brother's pet hamster. ," Lilly says "Sometimes I wish I had a brother; when I come over here, all better!Lilly is a huge fan of Hannah Montana even before she learns Miley's secret.She is extremely extroverted, excitable, clumsy, and impulsive." She discovers Miley's secret in the pilot episode, "Lilly, Do You Want to Know a Secret?" when she sneaks into Hannah's dressing room after a concert and she sees the lucky bracelet that she had given Miley earlier in the episode.In "You Are So Sue-able to Me," Lilly has a crush on her schoolmate Matt Marshall, but it is never revealed if they actually dated.
Lilly grew up in California and was childhood friends with Oliver.However, Matt gets turned off by Lilly's new look and stands her up.(Lilly and Matt reconcile at the end of the episode after Miley was found liable for Lilly's suffering in the Teen Court.) Lilly's celebrity crush is Orlando Bloom.Miley also has a dream in which Lilly starts dating Jackson, and must learn to accept her friend for who she is.
When Miley wakes up, she believes the dream was real and is pleasantly surprised when Lilly reacts with disgust.
In Season 2, Lilly starts wearing wristbands in all colors and also in Season 3.