Dress for a non dress wearer

[Thebookswereherfriends]

I've got a wedding to go to, I know I don't have to wear a dress, but I always like to make a bit of an effort for weddings and wear something I don't normally. I've not worn a dress in about 6 years and have put on weight. What style of dress suits a size 18 with big boobs and tummy, but slim legs. Don't like sleeveless or pink, otherwise open to suggestions.

I wore this for a wedding (size16/18) and felt great in it. Only thing is, I'm not sure how good it would be for huge boob's as most of my weight is on my thighs.
www.cosstores.com/en_gbp/women/dresses/product.curved-neck-pleated-dress-navy.0645478001.html

sorry, just noticed you don't like sleeveless. shame as the dress really was flattering.

Thank you for the suggestion.