Is it normal my sister is so different from me?

shes actually soo much better then me i didnt know sisters could be so different! she is prettier and hotter and smarter and more fun then me. she has lots of friends but no one likes me because im stupid. she also looks so much better then me. she even has bigger boobs and smaller nips. and she has a small labia while my vag is a total outtie and i hate it because guys think its disgusting. she also has a good body shape and a nice butt while im just a fat person. so basically shes perfect and im disgusting =( how can we be so different?