Set a realistic wedding budget, and stick to it.

Setting the Budget (and sticking to it!) You don't want to start your married life deep in debt from wedding expenses. Set a realistic amount, and stick to it. The best way to do this is to keep a notebook where you can write (and compare) quotations from suppliers, record payments and deposits, and note the small expenses that add up when you're not looking (like the cost of mailing invitations). This way, you'll know exactly how much you're spending, and how much you have left before breaking the bank.
Tradition once dictated that the bride's family would shoulder the cost (or in some cultures, the groom's) but today the costs are usually shared. You can either divide the tasks (who pays for the flowers, the limo, the dress, etc.) or pool the cash into one checking account.
If you find your costs spiraling out of control, remember there are many ways to cut corners without scrimping on style. For example, you can hold a light brunch or afternoon tea instead of a dinner reception (which costs more per plate). Or you can ask your friends to do the videography instead of getting a hiring a professional (they're more likely to get candid, fun takes anyway). Another way is to set your priorities. Not everything has to perfect. Identify your list of must-have/optional/nice-to-haveEand distribute your budget accordingly.