My sister went on a business trip, so I had to take care of my niece for a while. When I saw her again, she had huge, juicy tits that were impossible to ignore. Her developing breasts were too much for me to handle. As she leaned forward, her big tits swayed, and I couldn't help but fuck her right away. I sucked on her delicious white tits and fucked her hard until she came, creampieing her tight pussy and filling her undeveloped womb with cum.