Is it normal i often like the way girls look in specific dresses?

For example: I really like Susan and Lucy’s dresses in the movie Prince Caspian (referring to the red and purple ones) and while I like their other ones I’ve always really liked those in particular and I’m glad they were put to film. I guess the weird part is that I’m sad if there’s no image of them (like in the movie Narnia has no cameras so the best way the characters could remember them is by painting).

If I ever get a girlfriend she’ll probably get tired of me taking pictures of her when I think she looks particularly good.