. >> reporter: she has more than 5 millram fo 15 million subscribers on her three youtua nativef nezuelah years ago on a whim. >> i decided to post my first youtube video. >> reporter: what were you studying? >> biology. but i always loved makeup. in biology, there weren't a lot of people that loved makeup. so i said, you know what? i'm going to post a video online and find people who love things i like. so i have a screen and i flip it and talk. >> reporter: we visited her at her home in los angeles that doubles as her studio. what do you get paid per post, and what is the most you've gotten paid? >> i wouldn't be able to give you an exact number. >> reporter: ballpark? >> i have a college degree, my husband has a college degree. we can make a good living from it. >> reporter: mariela and her husband moved to the u.s. to go to school. >> i'll talk to the camera. >> reporter: the youtube videos were an outlet for to you practice your english? >> yeah, i was like, i have no friends, so i'm going to find some online. >> reporter: did it work out? >> i think it did. i have a few million. re