ISO half sisters, born in PA, 1982 and 1986

I am looking for my two half sisters born in Philadelphia, PA. One was born in May (I think) 1982, the other in 1986. Mother's name was Irene. There are 4 of us girls all together. I'm the oldest (1980) and the youngest (1988) found me just recently. We discovered we lived 15 min. apart our whole lives. We want to find you - if you live close to us, we may have gone to highschool together!