Fooling around with my stepsis

My 18 y.o. stepsis asked me to take some photos of her in her new sexy swimsuit I had no idea it would be too much of a temptation for me. Gotta admit it, she looks super-hot with her amazing butt and cute perky tits, so naturally I got a boner right away. Of course she noticed, and next thing I knew she was all naked sucking my big dick and begging me to fuck her. Man, that tight young pussy was so fucking warm and tight! Ain't we a kinky family!