According to Project Wedding.
1. You forget your veil or headpiece. The veil factors into your overall look, and its length and style may determine if you’ll want to wear your hair up or down. If the veil hasn’t arrived yet, ask the bridal salon to loan you a sample, or at least bring along a photo when consulting with your hairdresser.
2. You cut your hair days before the wedding. Stay away from the scissors and don’t plan on getting a haircut right before the big day. Instead, do it a month or two prior to the wedding to ensure that you like the cut and it will work with the hairstyle you’ve chosen.
3. You don’t carefully choose your stylist. You will remember your wedding day forever, so choose someone you trust to style your hair. If your hairdresser doesn’t typically do wedding hairstyles, ask him or her for a recommendation, or speak with friends or other brides who have had hairstyles you’ve admired.
4. You experiment with hair color.
Talk to your stylist about how you envision your hair on the big day, and let your colorist know if you are planning on wearing your hair up or down. It’s also not advisable to dramatically change your hair color before the wedding. You want to look like an enhanced version of you, not someone completely different.
5. You only try one style. Just as you tried on several wedding dresses (even if you knew the first one was the best), have your stylist show you at least three different looks based on your description of what you want.
6. You go to your consultation without any ideas. Pictures speak louder than words. Gather photos (e.g., from magazines) of hairstyles you like. This will give the stylist an idea of the kind of style you’re seeking. The stylist can’t make you look like the person in the picture, but he or she can attempt to copy the hair as long as the texture and length are not an issue.
7. You forget about touch-ups. If it’s in your budget, consider having the stylist stay after the ceremony and throughout the evening to do touch-ups to your hair—or even give you a completely different look. If the expense is too high, ask the stylist for tips on how to touch up your own hair during the reception.
8. You forget about the dress. Your hair should always complement your gown. Select your gown first and then decide on the hairstyle with your stylist.
9. You think short hair is your only option. If your cute bob doesn't jive with your dream of having long locks on the big day, ask your stylist for extensions. This temporary fix can be a perfect solution.
10. You forget about the groom. Although you’ll be the focus of the big day, you will want his hair to look just as good. Make sure the groom gets a good haircut a week before the wedding.