Sweet Valley Twins (thing)

Sweet Valley Twins is a series of books by Francine Pascal.
There are, I guess in a way 4 or should I say 5 Or 6 diffrent series becuse there is Sweet Valley Twins, Sweet Valley Twins and Friends, Sweet Valley High, Sweet Valley Kids, And their is also super chillers on Sweet Valley High , Sweet Valley Twins and Friends and Sweet Valley twins , and the chillers may count as a series. They are very stupid yet somehow kind of addictive.