How much is appearance weighed during rush?

[diet coke]

Hi. I'm currently a sophomore and plan to rush in the fall. I was just wondering how much appearance is weighed when it comes to rushing, in your sorority or in general? That is, weight-wise. I know that appearance isn't everything and personality carries a long way too, but I'm a bit nervous about the pictures I see of sororities on my college campus, through the Greek website at my school. My body type doesn't seem to fit in with the majority of the girls in sororities! I'll admit that out of everything there is to worry about rush that this is what I worry most about (and it's quite silly), but I've learned that first impressions are made on appearance alone in the first 7 seconds of meeting and we girls alone are very judging by nature. I know that there's a lot more to it, like how you carry yourself and confidence, but it's just so nerve-wracking. I especially freak out when I see pictures of girls in bikinis at some event... I've never worn a bikini in my life.

On an off-note, so maybe my question can be answered better, I'm a bigger girl. I weigh 170 at 5'9" and have been losing weight since January (successfully have lost 23 pounds, for health reasons). I'm still working out now and plan to continue to lose some weight throughout the rest of summer (hopefully 10 - 15 more pounds). Any help would be appereciated!