United Kingdom, Jan. 27 -- Ashley Tisdale's daughter thought her 'High School Musical' co-star Zac Efron was her father.

The 39-year-old actress portrayed Sharpay Evans in the Disney Channel hit alongside Zac's Troy Bolton and when her three-year-old daughter Jupiter's actual dad, Christopher French, showed his little girl the 2006 musical movie, "about a year ago", she asked if the 37-year-old actor was her pop.

Speaking on the 'Breaking Beauty Podcast', Ashley recalled: "She thought Zac Efron was her dad.

"I was like, 'No, that's not daddy. Just cause they [both] have dark hair, it's not daddy.'"

Ashley - who also has four-month-old Emerson with her spouse - explained that her daughter is starting to establish that her mom is famous...