Pregnant and bridesmaid dress doesn't fit!

Any seamstresses or tailors here??
I bought a bridesmaids dress a few months ago, size 2 and will be 5 months pregnant at the wedding, I tried on my dress ago today and just from my boob growth I can't zip it up! Ahh! Can I get a regular dress altered to fit a baby belly??
I also looked up removing the zipper and adding a lace up back to customize the size around my belly, would that work??