You wake up and realized, it is 1998, and you are in the house of sisters Halliwell. Then you see them all. You also realized, you did shrink down, so you feel tiny in their presence. You also became invisible. Then one of the sisters walked closer. It is Piper Halliwell, second of the sisters, tall, beautiful, powerful witch. She can not see nor feel your presence. She even can not feel your touch. You are invisible in her eyes and for all her senses. The same about all her sisters.