Billie desperately wants the guinea pig in the pet shop! Mom finally agrees, but is it too late? Billie B. Brown series: Meet Billie B. Brown, brave, brilliant, bold, and bound to become your best friend! Brand-new readers will readily relate to this series of stand-alone, everyday adventures. Filled with true-to-life situations, warm family relationships, humorous illustrations, and positive problem-solving, they're taking the early reader scene by storm! Paperback book. 48 Pages. Ages 4 to 7 years.