Girls Party Wearing?

Hey gurls, I am from new york city, my Bf wants to give me a treat on his pass-outs from his MBA exams, he asked me to come in some decent outfits, actually I am an quilt artist and I don’t have much sense of new fashion styles, so please advise me how should I dress myself, let me tell you I am slim, height 5 feet 6” that’s all, please send me your advise I will be waiting to hear them from you.