When we reached the cash register, the cashier looked at the lingerie and us, and gave us a smile signaling that she knew exactly what had happened in...the dressing room. I blushed and stared at the counter while she rang up the purchase. He paid for the gown and we walked out, embarrassed. He walked behind me with one hand on my hip and laughed at my embarrassment. I turned around and gave my best look of a sad, innocent, embarrassed, little girl. It mustve worked because he pulled me in tight. Little did she know that she was about to have another sexual "first" in her horny little life."I've got a good friend of mine that I wanted you to meet, Mandy, and get to know this afternoon," I said as I stood to walk over to where Mandy was standing. I would normally have taken Mandy in my arms and begun kissing her and feeling her up to get her ready for our fuck session but today I just wanted to enjoy her a little bit and then turn her over to the "Main Event". I did take Mandy in my arms. " Steve said"I'm sorry" I said shyly and confused. I wasn't really sure how to take what he said."You can't help being so sexy, baby, but do you think you can rub it while you are talking?"So it was a compliment, I supposed, and yesterday I did a lot more than rubbing him, and I am his girlfriend now, and it is kinda my fault he is hurting, so it didn't seem unreasonable "I guess so" I replied. I shyly put my hand on the bulge of his pants and rubbed and explored it the best I could as we. As she peeled off the sleek slim red number off her shoulders, I gasped as I saw that Mom wasn’t wearing any underwear, well no bra.. And as the dress fell to the floor, it confirmed the other part of the equation… Mom wasn’t wearing panties either. She looked just as incredible as my sister. In fact they shared matching suntans. It was clear that both liked to sunbathe naked, and for the first in 3 years, I was going to be a part of it!!Cass walked over to a now naked Mom, and cupped her.