They are as follows: (see exact photos below for ordered products)
1) Padme Amidala Deluxe
2) Adult Princess Leia White Dress
3) Alice from Resident Evil: Extinction
4) Final Fantasy (surprise, under construction)
Both of the Star Wars costumes were ordered from http://www.buystarwarscostumes.com/
The Alice costume is from: http://www.mooncostumes.com/
As soon as I get them in, I will post photos and give a review. They were fairly cheap, leaving me more funding for the missing accessories and upgrading the cheap ones they come with. Cheap dress, great accessories!
As far as the Star Trek Las Vegas Convention is concerned, I think I will have a Uhura dress for a one time adventure. The remaining days I will be sporting Vegas style with a touch of Trek.