The Bridesmaid by Hailey Abbott

Abby Beaumont knows all about weddings- after all both her parents are wedding planners who run THE place to get married in Watertown. After witnessing many disastrous weddings and and obnoxious brides, Abby and her sister Carol agree never to get married. When Abby is fifteen, her sister Carol comes home and shockingly announces that she is engaged to be married, and Abby will be her bridesmaid. Can Abby stop her sister from becoming a bridezilla and save her parents marriage?

Cute, fast read. Abby- though a spoiled brat at times- has a funny voice and interesting perspective on the events around her.