Karen, Honesty is the best route. I have found that the younger generations are far more accepting. My 28 year old daughter teaches yoga and dances in a company. The other day, she video chatted with me and I forgot that my nils were polished. He comment was,"Way to bend gender norms, Dad". Anyway, honesty is fair for the both of you. I think you will be pleasantly surprised.
BTW, my daughter is coming to visit next week. I think I may be coming out to her. Shall we compare notes?