Hmm... Finns don't really do this whole diva thing, at least not too well (), but this is what I came up with:
1. Tarja Turunen, who used to be the singer in the band Nightwish:



2. The first person to come into my mind when thinking about Finnish divas - opera singer Karita Mattila:


3. ??? (I'll try my best to think of someone)