Buy Cocktail Dress

I have a black tie event to go to next month and I need to find a nice evening gown to wear but I don't want to spend a lot of money since I'll probably only wear it once. I don't even know where to begin to look for something like that.

im not sure what size you are, but check some of the places you would shop even if you werent pregnant. Just pick out empire-waisted styles that get fuller from just under the bust, and go up however many sizes from your usual. If anything, the bust and shoulder area might end up being a little big, in which case you could take it to a seamstress to have that portion altered. You will probably save money going this route, as nice "maternity" clothes cost an arm & a leg. I'll post some examples of normal dresses that would look cute over a baby-bulge…

http://www1.macys.com/catalog/product/index.ognc?ID=294099&CategoryID=35177&LinkType=EverGreen – $118
http://www.forever21.com/product.asp?catalog%5Fname=FOREVER21&category%5Fname=dresses&product%5Fid=2044627560&Page=all – $40
http://www.edressme.com/c4437t.html – $90
http://www.edressme.com/c4437.html – $90
http://www.edressme.com/1043-tr.html – $92

or check if anything is on sale in the nicer maternity brands….

http://www.mimimaternity.com/collectionviewall.asp?category_Name=Evening&Category_Id=3224&MasterCategory_Id=6&Pageison=1

http://www.apeainthepod.com/collectionviewall.asp?category_Name=evening&Category_Id=4562&MasterCategory_Id=8&Pageison=1