W-4 Married Jointly Stepchildren. I have always claimed 0 single, and my wife, 2 head of house. We're married now. Do we both claim 2? Her 2, me 0? Or both 0?

W-4 Married Jointly Stepchildren. I have always claimed 0 single, and my wife, 2 head of house before our marriage. We're married now. Do we both claim 2? Her 2, me 0? Or both 0? These are my step-children to. I just want to know what each of us should claim.