A two-day conference designed to boost self-esteem in girls ages 9-14 will kick off from 7-9 p.m. today at Bloomfield Hills Andover High School, 4200 Andover. Hosted by the nonprofit Girls Matter, the conference will feature keynote speaker Susan L. Taylor, editor of Essence Magazine, who will focus on how girls can build self-esteem and self-respect. The conference will continue with workshops, celebrities and other activities from 7:30 a.m. to 2 p.m. Saturday at Wayne State University in the General Lectures Building, 5045 Anthony Wayne Drive.