Sister in law as bridesmaid?

So I'm close to one of my s/o's sisters, but the other sister and I aren't really close at all. 
I want sister 1 to be one of my bridesmaids, but I'm 100% sure that sister 2 will throw a huge fit if I don't ask her as well. 
Do I ask sister 1 anyways and risk causing drama with sister 2 and having her have me forever... (yes she's this dramatic) or do I just not ask either? Or ask both??

Vote below to see results!