Scottish camping?

[jen the fashion desiginer]

hi there iam a 16 year old girl and our youth group is going camping for the week in northern scotland, and i dont have a clue what to wear, as it will be frezzing cold 24/7 all the time, i would imagine i will need tonnes of layers but i dont really know exactly, i dont have money to buy expensive outdoor clothing,so the clothes will have to be my own


i also have yahoo messenger, feel free to help me through that aswell

thanks