The Lesbian, The Bitch, And The Bathrobe by Walker Long

Lily is beautiful and voluptuous, but also shy, insecure, and stifled by her overprotective parents. Her best friend, Megan, is sexy, tough, and confident but has been hiding a secret that threatens to alienate her from her friends and family. When they stumble upon a magical doorway to another world it seems like a dream come true. This strange new world is full of wonder and mystery, not to mention sexy adventures like nothing they have ever imagined. Their arrival has thrown off a delicate balance, however, and a powerful evil is waiting. In the struggle to survive, Lily may discover what she needed was right in front of her the whole time.