
Remember that for every body type there is a design which favors it hiding the flaws and highlighting the affections, not whim the beautiful designs and Sizes XS that only you can use the models.
Make sure the tone you choose is appropriate for the season and for the style of the party, avoid daytime colors and patterns that can make you look like you're passing by the beach.
Chat with the guests of the party on clothing, this way will achieve only wear a dress. Another option is to buy the garment in a shop away from the area so no other girl buys it.