We feel lied to. Ever since Mary-Kate and Ashley Olsen came out with the iconic song "Identical Twins" off their VHS hit Our First Video, we've been programmed to believe that they're, well, identical twins. And for years they did indeed look a lot alike, but no, they're not alike. Over the years we've been able to see the how the fraternal sisters have diverged in looks, and if you ever needed concrete ways to tell the Olsen twins apart, scroll down to see how they've morphed into different people… albeit different people with a slightly similar face.

1993

1995 mary kate and ashley

Here are bb MK & A fresh-faced and about to promote Our First Video, featuring the hit "Brother For Sale" (still a banger). However, while the two girls are breaking free from the Full House family, they still have a long way to go before they become their own women. The only way to distinguish them are with literal name tags.

1994

1994 mary kate and ashley

Ok, we have a little bit of variation here with the gingham shirt colors. We think that's Mary-Kate on the left and Ashley on the right, but we're not about to put any hard money on it. They're basically still indistinguishable.

1995

mary-kate and ashley 1995

Ugh, you guys. Mary-Kate is probably the black swan of the two? Maybe?

1997

1997 mary-kate and ashley

An important year in the life of the Olsens: when they both got a trendy layered cut, making it even harder to tell them apart. It is important to note that around here they do start wearing different outfits more often, even if those differences are nuanced.

1998

1998 mary-kate and ashley

So, in 1998 the Olsens took on the short-lived Two of a Kind, in which Ashley played girly-girl Ashley and Mary-Kate played tomboy Mary-Kate. That… really makes things simple for everyone. Names aside, this is an easy idea to keep in mind when telling the Olsen twins apart, be it in movies or real life. Ashley is more traditional, Mary-Kate has more of an edge. Moving forward…

1999

1999 mary-kate and ashley

Switching Goals, plays on the same concept of "girly-girl versus tomboy" with the twins following the same format as they do in Two of a Kind. Like, it's a thing, it's a definite thing. But as far as the promo shot goes, MK is the one with the flippy hair and Ashley is ironing her hair inward. Differences in hair flips were the main way you told the twins apart at the turn of the millennium.

2000

mk and a 2000

Speaking of which, Ashley may be the one with the outside flips in this shot. They're not making it easy for us.

2001

2001 mary-kate and ashley

This is when the sisters start looking a little dead inside, and that's all we have to say about that.

2002

2002 mary-kate and ashley

This is the first shot where we can say with confidence that Ashley's on the left and Mary-Kate is on the right. Why? Although the Olsens are still using flat irons for us to tell them apart (sigh) and wearing the same outfits (DOUBLE SIGH) the 2000s are when you start seeing that Ashley has a fuller mouth.

2003

2003 mary-kate and ashley

THIS. RIGHT. HERE. THANK. GOD. In 2003 MK dyed her hair red, making it exponentially easier to tell the Olsens apart at long last.

2004

2004 mary-kate and ashley

Ashley for most of this era was rocking bleach blonde hair, but the Olsens' bigger difference here is due to Mary-Kate's weight. Though both ladies are quite lithe, Mary-Kate's struggle with anorexia was coming to a light. She entered rehab for her eating disorder that same year.

2005

mary-kate and ashley 2005

This. Is. Everything. While still concerningly waif-like, Mary-Kate is starkly different from her sophisticatedly dressed sister, shrinking into the background despite a poppy punch of scarlet lipstick with a matching bolero.

2006

2005 mary-kate and ashley

Furthering the divide, Mary-Kate was full boho by 2006, wearing her red-head long and tangled. Ashley's doing basic boho, with a freaking crown braid. Whatever, Ashley.

2007

2007 mary-kate and ashley

Loving it. Mary-Kate is so extra during the mid-2000s, like that is some straight-up Blanche Dubois realness she's serving with that stole.

2008

2008 mk and a

This is interesting. For a brief moment in 2008, Mary-Kate and Ashley were both hiding behind their sunglasses, relatively laid-back and similarly coiffed. Mouths aside, how can we even know which one is Mary-Kate?

2008 Part Two

2008 mary-kate and ashley

Oh, there she is.

2009

2009 mary kate and ashley

MK and her red lips and bleached brows on the left, Ashley and her boring full mouth on the right. Mary-Kate likes to drown her clothes a little more than Ashley, though they're both a big fan of the look.

2010

2010 mary-kate and ashley

The Olsens are back to being near-identical! Who would've thought? For the record, Mary-Kate is the one in the harlequin jacket.

2011

2011 ashley and mary-kate

Yikes, okay. This is where you can see Mary-Kate's face getting gaunt in a weird way again. Her chin looks certainly sharper. Ashley's concerned.

2012

2012 mary-kate and ashley

A brief, sleek, dark-haired moment for Mary-Kate! The Olsens actually both look very good and (dare we say it) borderline normal.

2013

2013 mk and a

They're now still keeping to the same aesthetic, but you can still clearly see who is who with those differing jawlines.

2014

2014 mary-kate and ashley

Like Mary-Kate is clearly the Olsen with the more defined face, but by 2014 they've both embraced Voldemort chic.

2015

2015 mary-kate and ashley

Mary-Kate is also typically a shade tanner and more likely to come home to a gigantic horcrux-snake every night.

2016

2016 elizabeth olsen

A moment of silence for Elizabeth Olsen, the woman who has to live the curse of being an Olsen sister but not a twin. She's towering over her siblings, and if you can't tell who is who by this point then God help you.

2017

mary-kate and ashley 2017

And there it is. With Mary-Kate's chiseled face and scragglier mane, she's definitely set herself apart as the more risk-taking sibling. But we're grateful that the Olsen girls have simultaneously committed to a life of haute couture and hating to smile.