Want to make more friends in Sorority

[Lilyy]

Hi guys, so I rushed as a freshman and got my first choice house! I was so excited and happy to meet everyone/participate...until the next recruitment yr. I felt too ugly to make friends with anyone because they're ALL beautiful. Anyways, I went idle(bare minimum participation, never did anything) the last two yrs and now I'm a senior this year, that has no friends in it, only a few girls that I seldomly talk to. I've felt a mix of, "I'm not good enough for this house, so why would they be my friends" and "it's too late for me". How can I rekindle past friendships and make new friends with my sisters in the sorority as a senior?? I love my sorority and wearing the letters, but I hate not having any friends. Any advice?