Finally, I got this number from Banana Republic (40% off and also a size small!) for the rehearsal dinner. You can't really see the neckline because it's marred by the scarf, but it's a perfect airy dress for me in a color that I have not represented in my wardrobe, especially in my dresses.
I felt a little guilty buying more dresses (I have an insane dress fettish) but I'm also realizing we'll be on our honeymoon for 7 nights, plus the rehersal dinner, so that means I need 8 separate dresses. While I easily have those, they aren't all sexy-honeymoon-in-Jamaica worthy, so I think one more dress (perhaps a maxi dress?) is in order. I'll keep my eyes peeled.