ET was with the Vanessa Hudgens
as she dressed up
as a scary witch to frighten unsuspecting guests at Knott's Scary Farm, but the best reactions actually happened after she took off her mask.
"I'm really feeling the crinkles," said one young female guest, only slightly startled by Hudgens' getup.
"I don't really have crinkles," Hudgens said before slowly removing her mask.
Watch the video to see the girls' reactions to seeing the High School Musical star.
Hudgens is just one of many stars who will take turns at freaking out fans at Knott's Scary Farm until November 1.