Need a book idea

Do any of you know of a good book that teaches about appropriate touches? Not so much if an adult is touching a child; more along the line of touching each other appropriatly.
I have a young audience (preschoolers) who need a book like this. Any suggestions would be great!

A book that I've heard is really appropriate for preschoolers is:

"Your Body Belongs to You" by Cornelia Maude Spelman

You can find it on Amazon:
http://www.amazon.com/Your-Belongs-Cornelia-Maude-Spelman/dp/0807594733/ref=pd_s...

I need to read this to my second graders... we've had some incidents this year, too. It's sad we even have to address it in the classroom!

Hope this helps,
Chelsea :)

Thank you! I will definitely be checking that one out. Believe it or not it's my 3 year olds who are learning a bit too much too early. It seems to get worse every year.