Pregnancy announcement for O/S family

Gabrielle
After a long wait my husband and I are finally pregnant. Both sets of parent have been anxiously waiting for more than a year for us to give them some good news. We currently live in Australia near my parents, but my in laws still live in Eastern Europe. Any ideas on how to break the news to the O/S family? They love us both so much and really want them to feel special and included. We want to do this on the day we break it to my parent here