As an American (born and raised) girl of Indian (and Hindu) origin, I would highly advise against it.

It’s a very pretty dress, but it’s not really appropriate for a Hindu wedding. As you may know, a Hindu bride generally wears a red sari. I don’t know if you have attended one before, but I’ll tell you that should you wear the dress, you will look very out of place at your own wedding. Most women there will be dressed in sarees and eleborate gold jewelry. Also, (and especially if his family is traditional), you will likely be considered disrespectful to the wedding customs. If you are going through with a whole, elaborate Indian wedding, why not go all the way? A Hindu wedding with a white dress is neither here nor there.

You will be having an American wedding anyway, so my advice would be to be happy with your white dress then. At the Indian wedding, wear the traditional garb. Whatever your fiance might say, I’m sure he’s looking forward to seeing you on his turf, in an Indian wedding, in a sari. Why not oblige him?

As for the second dress, perhaps you could wear it at the Indian reception? Usually the bride changes into another sari, but in this case, to add a bit of your culture into the Indian wedding, you could wear the white dress. That way you can do all three

As an American Hindu, that’s the way I see it, anyway.

Good luck with whatever your choice!

Good luck!