How can I get my mum to buy me some clothes? Am I being unfair?

Well, my opinion is that your mom probably can't afford to buy you new clothes. I was in the samr position when I was younger. I had a pair of jeans, and a couple pairs of shorts.. which really sucks during canadian winters. So, to me, you have plenty. I also got a job when I was 12, so I could afford ne a things.. Although, then I just ended up helping my mom out financially. Your best bet would be to ask for a gift certificate for your birthday and christmas, go get nee clothes and ask your friends if they wouldnt mind giving you their old stuff.. Not nice, but atleast you wont be nakef