Photographer Jade Beall had no idea what she was getting into when she posted a photo of her friend's post-birth body on Facebook. Since then, Beall has snapped more 20,000 photos of mothers from all over the world to explore the idea of beauty and the physical transformations of motherhood -- scars and all. She hopes to publish a complete photo book, accompanied by the stories of the women she photographed,with the help of a Kickstarter campaign. Click through to see some of the most stunning images from her collection.