looks

every tier looks at that. the ones who say they don't are lying. but you can get into a sorority, just don't go in with the "do I even have a chance" attitude. maybe some will drop you, maybe some won't. go in, have a great personality (I've found a sense of humor is always a great trait) and keep an open mind for every sorority. don't worry about tiers that much, it will just cause distress and anxiety during the week. go in simply with the "I can't wait to join a great group of girls" mentality and you will honestly feel so much better. as for your looks, you might be being hard on yourself. Dress for your body, use makeup to show off your strongest features, and accessorize stylishly and that can honestly go a long way

No matter your shape, size, or looks you ultimately want to find the house that you can call home. I know I used to think "can I go make-up less around these girls and feel comfortable?"

You want to look your best. But I guarantee after recruitment is over all the girls are taking off their makeup, fake eyelashes, and wedges and walking around in sorority shirts and leggings. So you want to also be comfortable with the after the "show is over".

It's not 'don't worry about tiers' I just don't want to be cut also everywhere and stuck with like 3 options

I have seen over weight non-attractive girls in top tiers so I wouldn't let that worry you. In reality, if it comes down to the last day and you only have 1 to choose from but it's the right one, it won't matter to you a year later when those sisters are your best friends.
I will say that I am in a middle tier sorority that a girl suicided us (put only our sorority on her bid card) and she prefed with us and all other top tiers.
Good luck!

look, if you at least look like you are trying and you put your best foot forward and don't squash yourself with poor self esteem, then anything is possible.