Inside the lives of YouTube’s most successful young stars

Ryan of Ryan’s ToysReview and sibling duo Jillian and Evan are among the young talent behind the most popular videos on YouTube, turning their interests into a business. TODAY’s Jenna Bush Hager meets with the kids, who’ve written a book called “Watch this Book,” to get a look inside the world of the kids of YouTube. Jillian and Evan later drop by the TODAY plaza to try out some new toys.