To understand what a flower girl dress is, let’s first take a look at what a flower girl is. There are various roles within the bridal party. Adult roles include the bride, groom, maid-of-honor, best man, bridesmaids, groomsmen, and sometimes even ushers are considered part of the bridal party.
Children, if available and desired, have their roles also. These could be junior bridesmaid, junior groomsmen, little bride, flower girl, and ring bearer….
US 79 – dresswe.com
The flower girls dress can be white if the bridal party does not include a little bride. The usual color for this dress is different from the bridesmaids. What works best is a shade or two lighter or darker than the rest of the party. You want to carry the theme in some way. For instance, if the bridesmaids are wearing green, you would not have the flower girl in a pink or red dress. A white, light green, or darker green would look great….
Just remember to carry your color and or style theme throughout the bridal party, and be age appropriate with the younger girls dresses. You’ll be sure to have a wedding to remember.(Source:www.wisegeek.com)