I'm not trying to sound insecure. I'm definitely just really excited. And I hate being bothersome, and I've already texted the sister who is in charge of recruitment a bunch of times about various things, so I feel bad asking more questions.

Don't feel bad about asking questions, ever. Maybe they will learn in the years to come that they need to be a little more specific about what to wear and such, to avoid the multitudes of questions. If they are fairly new (as a chapter or in general) they may not have had to deal with that previously and realizing "oh crap, we should have told the pledges x, y and z" will help them out.

They aren't that new. They've been on campus for 10 years, and the org has been around for much longer than that. The sister in charge of recruitment is new though. She just crossed last semester, so it's her first time doing recruitment.

But she's the only one who has the actual answers. Maybe she'll start to get wise to that fact that she needs to be more forthcoming. If you absolutely don't want to ask her, you can ask any member of your organization what they wore to their pinning ceremony and what their advice is. Ask one of them to go shopping with you. Etc.

Just ask if there's anything specific you're supposed to wear. If she's new at her job your recruitment chair won't be sick of questions. If you don't get an answer or get a vague one, just wear something that is not revealing or tight and that you feel comfortable in.

If they haven't asked you to wear something specific, it may be because it isn't important/relevant to the ceremony, or because they forgot to tell you; in either case they can't possibly be upset if you don't wear what they expected.

I didn't end up getting my pin tonight. The sister who was supposed to bring it had an emergency conflict, but it was very casual, so I was dressed fine.

Really random question..
So you became an official interest on the 22nd and are becoming initiated as a sister (I hope that's the right terminology) on the 24th? Or are you getting an official interest pin?

I think she meant she's being invited to pledge.

I'm getting an official interest pin :)