Singer/actress Ashley Tisdale has dismissed reports of a rift between her and her HIGH SCHOOL MUSICAL co-star VANESSA HUDGENS, insisting the two are "bestest friends". The 22-year-old star has long been rumoured to be a rival of 18-year-old Hudgens, but Tisdale claims the press have it all wrong. She tells the New York Daily News, "People always try to compare me and Vanessa to each other, and it's so weird. "We're always laughing when people pit us against one another in magazines, like 'Vanessa versus Ashley: The Feud!' We call each other twin sisters. She's one of my closest and bestest friends."