Congrats on your weight loss and more importantly, the birth of your baby! If you aren't sure what to wear or how to put it together, go to a nice boutique you love the clothes in and have them put together an outfit for you. Even if you can't afford all or any of the pieces, you can see what you like, what works, what an expert who helps people buy for these types of events suggests, and then put something similar together at a store in your price range, or even from you own closet. An experienced salesperson can suggest some great, flattering things you may not have considered. I went to Hot Mama and the person picked out items I never would have looked at, but she was right - they looked great. Most importantly, you should LOVE what you have on and feel really, really good in it. Good luck and have fun!