Bellatrix Black (Lestrange) - the young one is portrayed by Keira Knightley. Before her, I thought Rachel Bilson, but then I see that she had nothing to do with Helena Bonham-Carter; and besides Keira is much prettier. ;)
Narcissa Black (Malfoy) - for Cissy as a teenager I picked Anna Faris, she’s not so similar to the other sisters, but looked alike (A LITTLE) to Helen McCrory.
Andromeda Black (Tonks) - Andie, is one of my Fav… So I picked Lily Collins for the teenager, and Audrey Tatou for HP Era.