It's lucky number seven for Bobbi Brown! Next month, the makeup pro will release her latest book, Pretty Powerful, which is filled with tips on how to achieve a flawless face—from a natural finish (BB's specialty) to an ultra-bold look. The new tome ties in with the beauty guru's recently launched Pretty Powerful Basics makeup collection. Brown also enlisted the help of celebrities like Gabourey Sidibe, Blythe Danner, and Sandra Bernhard along with her usual (and refreshing) mix of real women to demonstrate each look.Pretty Powerful isn't out just yet, but you can get a sneak peek now! Click "See the Photos" for a first look, then pick up the book for $30, at stores nationwide, starting in October.