If you are looking to purchase a traditional Indian outfit (not required), below are some recommended sites that offer reasonably priced attire with worldwide shipping:
AsoPalav
Kalki Fashion
Lashkaraa
Packing for an Indian wedding is always tough, even with using the extra space in your husband's suitcase, cause...the bigger the can-can the better. Unfortunately, airline baggage restrictions don't agree. Consider using vacuum sealed bags to save yourself from packing struggles:
