I'm moving and I don't think I'll fit in !?

I'm going into eight grade I'm 13 and a little overweight ( not really but I do Have meat on my bones lol ) and I was livin good in my old school , now I'm moving to the prissiest , best dressed , mean girl typical school because I'm in that district . I don't have the " cutest clothes" I haven't had " lots of boyfriends ( 2) "and I had em when I was younger and I'm not " a skinny little Barbie doll" like them , I make friends really easily because i an very nice and don't judge people for their face or weight so I am told I shouldn't worry but being just nice isn't gunna cut it . What do I do the first day at lunch ? This is also the year I want a boyfriend , what If I become a total out cast