Sabrina's Kiernan Shipka tells us her "first" everything! From her first date to the first time she saw herself as a meme, Kiernan spills it all. Who is the first person she would cast if Mad Men's Sally Draper had a spin-off? Will she reveal the meme accounts she secretly runs? How old was she when she first splurged on a pair of Chanel boots?!

Kiernan Shipka stars in the New Roku Original Swimming with Sharks, stream it now!

Still haven’t subscribed to Teen Vogue on YouTube? ►► http://bit.ly/tvyoutubesub

ABOUT TEEN VOGUE
Fashion, beauty tips, celebrity style, pop culture, videos, and more—everything you need to be ahead of the trends. Fashion starts here.