Skinny girls. You know the ones. Those girls who seem to eat whatever they want, yet never gain a pound. You can't help but envy their skinny jeans and high metabolisms—but now you don't have to.

The truth is, skinny girls live by a set of Skinny Rules, whether they realize it or not. And now dietician and nutritionist Molly Morgan has collected their 101 secrets so you can free your inner skinny chick and lose weight—without dieting! Drawing on the latest research and featuring insights from top experts and your favorite skinny celebs, The Skinny Rules shares the simple rules that every skinny girl follows, so that the rest of us can live like a skinny chick and look like one, too.