American going to an Indain wedding... what to wear?

Hello. I was recently invited to a traditional Indian wedding and do not know what to wear. Although the wedding is in America at the bride's hometown, it is going to be a very traditional weekend long Indian wedding. I know that wearing American clothes isn't a problem, but I also have Indian friends who can lend me Saris and the such. I'd love to get dressed up traditionally, but I'm worried people I don't know will think I look out of place or like the 'White House party' crashers.