An hour and a half later, IT Cosmetics' founder, 39-year-old Jamie Kern Lima, arrives. She's wearing a bright-pink dress and pumps, and her light-brown hair is pulled back in a low ponytail ...

When she was trying to secure funding for her fledgling beauty brand, Jamie Kern Lima heard the word "no" over and over and over again. She stuck it out, convinced that her brainchild, which would ...