Changes Places With Me by Lois Metzger
Rose has changed. She still lives in the same neighborhood with her stepmother and goes to the same high school with the same group of kids, but when she woke up today, something was just a little different than it was before. The dogs who live upstairs are no longer a terror. Her hair and her clothes all feel brand-new. She wants to throw a party—this from a girl who hardly ever spoke to her classmates before. There is no more sadness in her life; she is bursting with happiness.
But something still feels wrong to Rose. Because, until very recently, Rose was an entirely different person—a person who is still there inside her, just beneath the thinnest layer of skin.