I agree with both Joanne and Karin here. First of all, I think it shows a certain degree of unprofessionalism on your part by using the word “boobs.” I can’t help but think about how offended I would be were I this woman reading your question posted to a large part of the fitness world. I would suggest you work on your professionalism before even speaking to a prospective client in the future. Otherwise, if the client is not contraindicated for plenty of cardio, that may be the way to go to reduce body fat in general. Keep in mind that everyone loses fat in the reverse order that they put it on.