Q1: Probably about 1 to 1.5. There's definitely things it adds to it. She occasionally borrows slips of mine (one of which I never got back, grr ), and will raid my pantyhose/tights collection if she needs something. Our sizes are too far apart on shoes/dresses/skirts/blouses to help her otherwise. She has commented several times that I educated her about pantyhose; she wore grandma pantyhose before she met me. 'But they are soft!' she would say. Now she wears real pantyhose, ones that look great AND are soft. She enjoys that I don't mind shopping for clothes for her with her. She appreciates that I understand that if you find a piece of women's clothing or shoes that are perfect, you don't hem and haw about it...you but it right then and there because a week from then it will be gone and you'll never see it again.
Q2: I told my wife on my own terms, after we'd been dating about 4 months. Two days later, she bought me pantyhose. Nice ones too That said, acceptance wasn't total at first, but nearly so. We had a major bump along the way, about two years into our marriage. Worked out well though.