HERE'S THE GUARANTEED-TO-WORK GETTING TWINS GUIDE:
1. find a friend who has a tama the opposite gender to yours and is willing to marry for a baby boy.
2. make them both grow to adults age 2-6 and make them best friends.
3. the next connection one will visit the other and...oh, i better leave it a surprise!
i already done it twice and yes, works! but you'll both always get a boy. and the parents leave 24 hours after giving birth. after marrying you can't kill the baby, send it away, keep the parents, keep the the parents' points or make the baby go and parents stay in any way.
so BE SURE you want that before you make two tamas best friends!
yes, i've done it twice before, once an annoying by-mistake one where my dreamitchi and dazzilitchi that i took AGES working for married...and worst of all...
I HATE TAMA BOYS!