Some celebrities tumble out of nowhere into fame. Others, quite literally, grow up in front of our eyes. The best example: Mary-Kate and Ashley Olsen, the adorable and adorkable twins from '90s sitcoms Full House and Two of a Kind.Even if you never knew Michelle Tanner or the Burke sisters, and have only admired the Olsens as grown-up designers authors , and beauty innovators — that dry shampoo-perfume hybrid is rad, just sayin' — there's a lot to love about the twins. Olsen fandom runs deep, with droves coveting designs from Elizabeth and James and The Row (or, rather, admiring the very pricey The Row and then hitting Zara for something similar) and layering on their signature scents . And remarkably, in our tell-all, share-all, Snap-all age, the talented twosome has managed to remain pretty damn famous without any social media presence. Fact: We all freaked when they posted their first selfie on Sephora's Instagram — just this year.Because their beauty game has been pretty consistent lately (air-dried hair, beige lips, smudged brown liner), it's easy to think they've always looked this way. Oh, are you in for a treat. With a variety of hair colors and experimental makeup choices, the Olsens are the OG promoters of IDGAF beauty in its purest form.