Katie had told John about the time she woke up on Daddy's lap to find him playing with her nipples. John got really excited at the thought of their father with his sister and together they came up with a plan so that John could watch from behind the curtain when Katie pretended to fall asleep again. This is the email Katie sent to her brother afterwards.
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Hi John,
I can't believe it actually worked! You'd told dad you had a headache and were going to bed, and mum had gone to bed early too. I had a bath, made sure my skin was soft and moisturised, smelling sweet and I'd dried my hair before putting on my little shortie pj's. The top's yellow, and I know it's a little bit on the tight side but that makes my nipples more obvious - and I've noticed before that Daddy likes that. The shorts are really short, when I bend over they ride up my backside and I suppose really I should just throw them away. They were perfect for our little plan though.