The grown-up Bears have their hands full when Brother and Sister have a sleepover with their friends—join the party
? The Berenstain Bears series is extremely well-known with over 250 books total. ? The Berenstain Bears series have sold 260 million copies. ? The Berenstain Bears in the I Can Read format have sold a over 500,000 copies. ? The Berenstain Bears books are the most circulated books in U.S. schools and libraries.