Otd Ss News Today

>> reporter: between homecoming and gymnastics classes, brooke and bailey mcknight document their every move and song on the youtube channel. they are putting their own line of products branded with a double b in front of their 4 million subscribers. >> i would call it like an everyday line, like weve got t-shirts, wallets, pencils, notebooks. >> reporter: they recently launched their own mascara, too. was merchandise something that your followers were asking for? >> were seeing any time we post...