Would it be weird....?!?

I'd say pool, just because it's cleaner and I spend a lot of time at my pool so that's where I'd prefer mine since it kind of means something. But if you wanted to be more like "yea trash the dress!" then I'd go for the lake. Depend on what look you're wanting. Play around with it...not in dress...just have fun taking pix and see which place the pictures come out best at.