Ashley Tisdale by Theo Wargo/ WireImage.com Ashley Tisdale by Theo Wargo/ WireImage.com

Thanks to an imminent production start, Ashley Tisdale's feature-film debut might not be High School Musical 3 but rather They Came from Upstairs, an adventure comedy lensing in a few weeks and also starring Carter Jenkins ( Viva Laughlin Surface), Austin Butler ( Ned's Declassified Guide...)and Robert Hoffman ( Step Up 2). The plot, says the Reporter, finds a group of teens defending their Maine vacation home from aliens. All this on top of the usual acne concerns!