BABYSITTERS LITTLE SISTER 3pk by Ann Martin - Paperback Books #4, 8, 9

This vintage book collection includes three titles from the Babysitters Club spin-off series, Babysitters Little Sister. 

#4: Karen's Kittycat Club

Karen forms her own club with her friend Hannie, and although the girls enjoy having their own social group, they soon find that hurt feelings and battling egos are all part of the dues. 

#8 Karen's Haircut

Karen feels like an ugly duckling. Her baby teeth are all falling out, and she has to wear glasses, too! Karen needs a new haircut to make her look glamorous.

But the beauty parlor lady cuts Karen's hair all wrong. Now she's uglier than ever! What will all the kids at school say?

#9 Karen's Sleepover

Karen's having her first sleepover ever! She and her friends are going to tell spooky stories, try on makeup, and raid the refrigerator.

But then Karen and Nancy get into a big fight. Karen doesn't want Nancy to come to her party. A new girl comes instead, and she is no fun! What will Karen do now?