My sister was unaware that she had bought erotic underwear, but when I saw her changing into them, my eyes popped out! Her breasts were spilling over the small fabric, and her panties were hugging her ass so tightly they looked like they were about to disappear! She teased me by showing off how cute she thought I was, and then wrapped her arms around me, looking absolutely stunning with those cat ears on. I couldn't resist any longer and held her close, feeling her body tremble with excitement as she rode my cock and moaned uncontrollably.