Does being a legacy matter for sororities?

So I’m a triple legacy for a certain sorority that’s considered to be “top tier” and I’ve seen their Insta, and I’ve actually met 2 girls in it at parties and snap them. They’re very friendly and pretty and nice, but they all are absolute twigs. I’d love to join it since the girls seem like my type of personality, and since my mom and great grandmother were also in this sorority , however, I just have a more stocky build. Will I get dropped if I’m not a twig? My skins also very pale, and I have black hair, so I look very “contradictory” to this sorority’s color scheme, too.