[DubaiSis]

Your question is too campus-specific. At some schools being a sophomore means you better be the cream of the crop. At others it's no big deal at all.

I'm assuming you mean your sister IS a Gamma Phi, and she can write you a recommendation for only Gamma Phi. You need to find other sorority women to write recommendations for their sororities.

And I'm afraid you are doomed to fail since you've already chosen sororities you prefer when you admittedly know almost nothing about sorority life. Do some reading through recruitment threads here. It sounds like you have a pretty big learning curve, but that doesn't mean you can't get there and be happy.

And quit smoking now. We can all give you a whole list of reasons why you probably started and not a single reason to continue, except that quitting is hard.