This happened three years ago when I was sixteen. I had gotten a new dress for a friend's birthday party but found it needed some alteration. My mum said that my aunt, her young sister[who was 28] could do that as she was handy with a needle and thread.
Mum phoned her sister and after a few minutes and after some giggling she said my aunt would be at our house the following day. Next day my dad was at work when my aunt arrived and had a look at the dress and said it would not take long, this is when mum said she had some shopping to do and would be back in about an hour or so.
My aunt took my measurements paying some extra attention to my breasts. She told me to get undressed down to my underwear which I did but felt funny as no one had seen me in my underwear since I was small. So there I stood in just my white bra and lace panties, she told me to get into the dress and as I did so she said that as it was strapless and would I be wearing a bra of some sort? And I said no, so she told me to take off my bra which, after some persuading, I did, she said I had nice breasts and gave them a small squeeze.
My aunt marked what had to be altered and said it would only take a few minutes to alter and to take it off. So I now only had my panties on and was about to get dressed when she said not to just yet. She then took hold of the waistband and pulled my panties down and told me to step out of them which I did, she then slipped her hand onto my pussy and started to finger me, a tingling sensation went through my whole body. Next she stripped off and she was the first naked person I had ever seen.
My aunt had nice breasts and her pubic hair was perfectly trimmed she now started to play with my pussy and then slipped her finger into my crack and slid it in and out I was trembling at the feeling and soon was soaking wet, the cum trickling down my thighs. She told me to do the same to her and soon my fingers were inside her. After a few minutes she gripped my wrist as she came, she then kissed me on the mouth and squeezed my breasts and I did the same to her.
We then got dressed and she altered the dress in a few minutes. We were talking when mum came in and she asked if it was all done with a smile on her face , I said yes and went to my room and changed into it. When I came back mum and my aunt were giggling but said my aunt had done a good job, my aunt said everything went perfect.
Later, after my aunt had gone home, my mum asked me if I had enjoyed what my aunt had done to me. I must have looked shocked but she said not to worry as a lot of girls liked it.
Later at bedtime, she came into my room as I was getting ready for bed and told me to carry on getting undressed. When I was naked, she looked at me and said my aunt must have had a nice time as I had nice breasts and a nice pussy which she stroked. Mum lifted her skirt to reveal no panties and a very hairy pussy and she let me stroke it. We later had more times together and with my aunt, but my first time with anyone was special.