My top slips

I was exposed and helpless as my sisters friends took in the sight of my half naked body. I soon began to notice the slight bulge in their jeans. I guess I should take that as a compliment. At least things couldn't get any worse.

Just as I thought that, things got much worse. I felt the fabric of my top begin to slide down my body. It rolled down until it reached my tits. Lucky they were pretty big and I had picked a tight top. My top stopped slipping and although a bit more of me had been revealed my boobs were still covered. I could see the disappointment on the boys faces.

Just then a heard the sound of my sister moving behind me. Before I could react Lucy had grabbed my top and pulled it down the rest of the way. I felt my boobs burst free and I saw their faces light up.

I gasped and tumbled backwards. I landed in a heap at my sisters feet with my tits still on show and my skirt flung up above my waist.