You can try some DIY ideas. My fiance is American, and so, most of the cost will be on my family. I'm doing many things to save up. Here are some ideas I have:
DYI invitations and placecards- buy some rubber stamps and ready-to-print invitations cards ($15 for 100 at Michael's) and print it yourself, be creative in making something with ribbons etc. Avg cost of invitations run $150 to $400.
Look into alternative centerpieces than flowers, something you can give as presents later (maybe as gift to your bridesmaid), things like large pillar candles in vases. Decorate yourself with clear crystal garlands (on sale now from the holidays). I'm using Chinese lanterns. This will save a lot of money for flowers.
Look for a cheaper place to have the ceremony and reception. Natural gardens and parks are cheaper and pretty.
Music- try putting on something from an iPOD and just have a friend monitor the playlist throughout the reception. This will save at least a thousand for a DJ.
Have friends take pictures and do photoshop yourself. Maybe send picture files to a photo printing company China later on to make an album.
Dress- David's Bridal has their $99 sales all the time. Or, you can find an elegant simpler white dress at department stores. Have your bridesmaids pick dresses from department stores rather than bridal salons- more available sizes and cheaper.
Have friends help you out too. Friends are great resources for makeup and hair help, as well as a lot of set up work.
-----
I'm using some of these ideas, and my budget is about ten thousand. So far, I'm within my budget. Good luck with everything! Wish you the best.