I thought about dying my hair platinum blond but I heard someone say it looks trashy. I will admit when I saw someone with bleached blond hair it did look trashy but they were also really tan. I'm pale and maybe its just me but I always thought bright blond hair looked good with pale skin.
I wouldn't call it trashy, more like cheap. There is somewhat of a difference. Trashy means dirty, slutty, overly sexual . Cheap means not classy and tacky. Cheap can be trashy too but it often just means bad style or taste.
Bright platinum blond can look cheap on many people. I tend to think most people look best in a shade similar to their natural one but it depends.
I don't think blond hair makes anyone look trashy. It depends on your general style so it's also connected with clothes that you wear, make up and stuff. So I think you will look fine. And I guess it also looks better if a girl who's got blond hair doesn't have too much tan, especially fake - it just looks more natural.