Few girls have got what the Olsen girls have mastered: fortune, fame, and, most importantly, fabulous fashion sense. After successfully designing high-end line The Row and contemporary collection Elizabeth and James, the design duo is launching Olsenboye, an affordable line, this week at select JC Penney stores! To celebrate, we've pored over two decades of our favorite looks from Mary Kate and Ashley.

So click on and tell us your favorite looks, below!

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