>> zan dra's a standout because of her ingenuity and her being the prodigy. >> she's 16. >> she's 16. she's a standout. >> reporter: and now the moment they've all been waiting for. >> little lo? come on up here. this person is demonstrating an amazing ability at a very young comfortable in their own skin. so we are so excited to be carrying zandra. >> reporter: a huge day for our sellers. >> i can't wait to see your things in macy's stores. >> yeah. >> little lo. a name to remember. how does it feel? >> super excited. >> how are you feeling right now? dad and mom? >> i want to do laps around etsy. i am over the moon excited for her. >> it is fantastic. all the hard work. resiliency. all pays off. >> reporter: for "nightline," i'm rebecca jarvis in brooklyn. >>> up next, you know that expression herding cats? meet the guy who's creating a social empire doing just that. (foot steps) ? (jet engine) ? (heart beat) ? (water splashing) (rain drops) (engine revving) (tires on wet road) ? lease the exhilarating 2017 lincoln mkz for $349 a month only at your lincoln dealer. ere chronic made a