Wedding dress shopping

I’ll be in Vadodara for 3 days. That’s all the time I have to shop for my cousin’s wedding. Can you suggest some good shops where I can shop from and have clothes altered if need to be? I don’t have any idea of how shops are there anymore. I was also looking for good rental potions as I won’t be able to fly back with these heavy outfits. If you could help with some nice rental shops that would be greatly appreciated.