I've got on a few trips where i overpacked and brought pieces that don't work well w/ others so it was a bunch of extra stuff to carry, but if you're not worried about weight etc go for it!
I say it depends onhow much you can take and for how long. It's cute- but if it's just ONE outfit that you don't plan on mixing and matching, I say leave it. If you don't have much space everything should have a function/ match w/ other things