If you're like me and you like beauties and beautiful shots in movies like this, then you're in for a treat.
I've tended to become slightly wary of these movies, since sometimes they turn out to be kind of boring - for example much of Jess Franco's stuff. I also thought this was really strange that they would have young girls doing this and wondered what the heck it would be like. I was surprised at the level of sexuality the girls displayed at times, but for me it was a better movie for it. I think females would like this movie as well, unlike a lot of horror movies which is a genre this scarcely fits into.
It's also highly original and unique, I guess the reason it wasn't followed up by others was because it would be hard to match it. The images of it will probably stay with you for a while. I really love some of the up-close shots they gave of the girls. I think the girls complement each other really well: one is dark, the other is blonde. One is calling the shots more - as tends to happen in friendships/relationships.
There isn't a heavy plot line to it, just various things the girls go around doing. Sometimes, it can get a little boring, but the powerful musical score helps it through those parts really well. It's a good movie to watch if you have something else on your mind or are a bit tired, as it won't tax you with a mind-bending plot.