Well, I just saw it and I didn't notice any presence from Hilton besides the fact that she was there present on the screen. She wasn't so much bad as uninteresting. The only moment there was any life in her eyes was when she was stripping, which is probably because she was dancing to her own single when they filmed the scene. I'd be more kind to her if she was at least bad in a funny way.
Overall, it was pretty decent film if you like these kinds of movies. It starts off awkwardly, the first 40 minutes are basically unnecessary, but I don't blame them for trying to make a longer film than the usual horror fare. Please only do it if you have enough material though. The explanation of the killers background was probably too much, it's not really scary if you know too much about the villain, but still, it was fun once the horror got going. Wonderful production values and great sets. Chad Michael Murray was probably the best, he actually showed some charm at certain points. Elisha was cute, but she could've done more with the character. The backstory of the characters at the beginning of the movie was just laughable. Apparently the black guy likes rap and sex...and that's it. Also, I think I saw the microphone once when Elisha and Jared Padalecki are first in the house of wax.
"The gods who nurse this universe think little of mortals' cares. They sit in crowds on exclusive clouds and laugh at our love affairs. I might have had a real romance if they'd given me a chance. I loved him, but he didn't love me. I wanted him, but he didn't want me. Then the gods had a spree and indulged in another whim. Now he loves me, but I don't love him." - Cole Porter