Mommy says sharing is fun, but Jenna thinks it stinks! She doesn't want to share with her twin sister, Jaylin. She wants to play on her own and all by herself. Only after finding out that playing alone is very sad and disappointing does Jenna realize that sharing is fun. That's Mine, Sissy is a fun, cute way to learn about sharing. Whether it is a sibling or a friend sharing is the best way to learn kindness and love.