26 of Mary-Kate & Ashley Olsen's Most Memorable Outfits

Pretty sure I just bought a fancier version of those sandals at Opening Ceremony.

Intentionally or not, they were about a decade ahead of the Carolyn Bessette-Kennedy style resurgence.

At fifteen years old, it was the last time MK & A made a public appearance in matching outfits.

They then moved on to reverse coordinating— this time in halter tops and wide leg pants, like two lost members of Destiny's Child.

Finally the girls graduated to totally different outfits, nailing all the 2003 staples at once: pointy toe flats, faded boot cut jeans, "going out" tops and a beret.

Channeling Lily van der Woodsen even before Gossip Girl was a thing.

Never in the tabloid bikini pages and famously covered-up on the red carpet, this side boob slip is—I think—the only one of its kind.

For a while, Mary-Kate stuck to a specific template: long bohemian dresses, eccentric accessories, beachy hair.

A crystal ball would've looked just as fitting as that clutch.

Fur and lace together, obviously.

In the meantime, Ashley kept it polished: lots of Calvin Klein, a dash of red lipstick.

Pairing Alaia accessories with t-shirts that come in three packs is maybe one of the more brilliant moves of all time.

So Grey Gardens and haunting. I feel like she wants to eat my soul.

Back in coordinating outfits: channeling Courtney Love and pissing off PETA.

A surprising one: so much more '70s preppy beach-y than most of her wardrobe.

Sure, it's the jacket. But it's also the sunglasses and the hair.

At the launch of their book Influence, the sisters stepped out in crisp, streamlined separates in neutral colors.

Ashley's shoes might be my favorite simple-but-not-boring black pumps ever.

A testament to the classic trench's versatility. Just add a smudge of black eyeliner and a pale lip, and it's more Kate Moss clomping around London than Mom running errands.

If I remember correctly, this is what inspired me to buy a leopard print coat.

Color-blocking and print-mixing weren't really in her lexicon for a while.

Maybe she just missed those head-to-toe matching twin outfits?

Proof that petite girls can pull off super-voluminous looks, too.

Ashley can even elevate the suburban Mom look.

Sometimes a really amazing jacket stands out on the red carpet more than any of the gowns.

Celebrating their nomination for the CFDA's Womenswear Designer of the Year award, the girls made power dressing look really pretty.