While Emily Weiss started as an intern at Teen Vogue (and even made an appearance on "The Hills,") she became known for her blog, Into the Gloss.
The blog focused on beauty products, and it became so popular that she decided to leave her job at Vogue. In 2014, she turned her beauty blog into a company called Glossier, which sells beauty products directly to consumers via Instagram.
Just five years later, Weiss' Glossier has been valued at $1.2 billion, and she has said she plans to open five retail locations in 2019.