This might be an odd question. I look nothing like my cousins, but my mom and aunt being half-sisters might have something to do with it. Do cousins actually look like each other if their parents are full siblings?
I think it's rare for cousins to actually look like each other. My dad has a full blooded sister who had 3 children and neither me nor my sister looks like any of them. My dad also had 3 half-sisters, but of course we look nothing like them.
I look very much like one of my cousins, her name is Sarah. She is a few years younger than me, but whenever we were together people would always mistake us as sisters because of how much we looked alike.
Hm, that all depends. On my mom's side I look fairly different from my cousins although we do share a few key traits. However, on my dad's side a few of us look so similar that you cannot tell us apart from behind.