Mary-Kate and Ashley Olsen are without a doubt a '90s staple – you’d be lying if you said you didn’t watch them on your television every other day. Fast forward 20 years later, and the duo ditched us and fell off the face of Earth. The twins ruled the world and were brilliant at it, now, we can barely catch a glimpse of the fashion icons. Millennials are certainly having a hard time coping with their mysteriousness.

Most of us thought they were our best friends growing up – although they were living a completely different lifestyle than we were. We saw them grow up in front of our very eyes, and we were certain we knew them like the back of our hands. Well, not to disappoint anyone, but there are quite a few bizarre secrets about the duo that make no sense and facts that were kept hidden for some odd reason. Yes, we are about to dig out some unknown facts for all of you who are wondering what their favourite twins are up to. We’re only here to help with the withdrawal we know you’re having!

20 They Don't Like Dealing With People

There’s a recent shameful thing that’s come into existence, and it’s called ghosting. We’re starting to believe that the twins started the trend. After dealing with fame for years, since they began their lives in the limelight, the twins made permanent changes. Both Mary-Kate and Ashley now cannot stand being around us normies. They find that being around people is an unpleasant experience for them – how lovely?

19 Mary-Kate Had An Odd Wedding

In November 2015, Mary-Kate got hitched (in case you didn’t know like half of the world) to billionaire Olivier Sarkozy, but the nuptials were kept on the DL. Accustomed to lavish celebrity weddings, when news broke of Mary-Kate’s wedding, we were stunned to find out the celebration was entirely private. According to Page Six, things got strange when a room of no more than 50 guests was filled with smoke.

18 MK Was The Last Person To Speak To Heath Ledger

Before Mary-Kate walked down the aisle (we think that took actually took place), she was romantically involved with the late actor. When Ledger was found, it was Mary-Kate that his masseuse first contacted. If you’re scratching your head right now, we assume you did not know of their relationship. Consequentially, MK was involved in the intense investigation.

17 Ashley Once Had Lyme Disease

In 2015, Ashley went through a tumultuous time as she dealt with Lyme disease. The debilitating bacterial illness was caught in its very late stages, and the ticks underneath her skin caused unbearable pain in her skin and joints.

The delicate star took time away from the “lyme-light” since her heart and nervous system were also affected.

16 No, They're Not Identical

Gasp - they fooled us our entire childhood and adolescence! The twins, who look identical until this day, are, in fact, fraternal twins. Yes, we know that it was always impossible to tell them apart onscreen.

The producers of the cult classic, Full House, were able to notice some differences, and apparently, some fanatical fans of the duo can tell them apart, too.

15 They Have A Sixth Sense

What happens when twins are inseparable? In Mary-Kate and Ashley’s case, a sixth sense was developed. Because of that, until this day, the twins have a hard time separating their memories - how strange is that?

According to Vogue, in an interview the twins revealed they “have a shared memory.” Maybe two really become one.

14 They Don't Do Social Media

The twins are allergic to both social media and like online shopping. They have stuck to their guns since they made the decision to remain out of the spotlight.

Ashley explained that their lack of presence is because "[they've] never been connected to [their] fans in that way" and "[they've] stayed quite sheltered in that sense," as Cheat Sheet reports.

We praise them for being able to stay away.

13 They Always Wanted To Look Different

We still have a hard time distinguishing the gorgeous duo, even when they switch up their looks.

Ashley already decided to dye her locks a sultry deep brown, and Mary-Kate got some evident surgery done. One guaranteed way to tell them apart? Ashley “towers over” her twin sister by an inch.

12 Online Shopping Isn't Their Thing

Considering today's modern shopping world, fashion moguls are not fans of online shopping. Is that not odd considering online shopping means they can avoid dealing with people?

Ashley admitted to The New York Times that she has never purchased anything online, while Mary-Kate did buy something in an online auction once.

11 They Refused To Be A Part Of Fuller House

How rude! Neither Mary-Kate nor Ashley accepted the invitation to star in the Netflix revival series. The twins didn’t appear in front of the camera for years, so we assumed they would’ve put their feet back in the door.

Instead, Ashley explained that the reason they rejected the offer was that they did not want to act again. She added that it would make them uncomfortable, too.

10 Surgery Gone Wrong

A surgery gone wrong is the nightmare of many who decide to go under the knife. Well, that nightmare turned into a reality for Ashley, when she got a facelift. Days after the plastic surgery was done, her face began to swell and blacken – not normal, right?

Poor Ashley had a condition known as necrosis and had to undergo oxygen therapy immediately.

9 PETA Ain't Their Bestie

Why does PETA dislike the fashionistas? Because their clothing line, The Row, manufactures many real fur products. PETA have taken the necessary measures to share their thoughts on their blog, but the twins haven’t responded the way they’d hoped.

The twin style icons have a love for fur, and so, PETA deems them pesky.

8 Mary-Kate Dealt With Her Own Demons

Being a child star has its downsides, which is probably a reason why Mary-Kate hit the wall later on in life. Mary-Kate was no stranger to the spotlight, and in later years, it led to addiction.

Of the two, Mary-Kate was the half of the twin duo that fell deeper into the dark hole known as substance addiction.

7 Mary-Kate Is A Step-Mother...

Mary-Kate’s beau, Olivier Sarkozy, has two children from his previous marriage. Yes, the billionaire banker is old enough to be her father. Well, when she signed on the dotted line, she agreed to stepmom duties.

Besides the fact that we’re jealous, strangely enough, Julien and Margot, have a stepmom who is only slightly older than they are; MK is 32 and the kids are teens.

6 Most Of Their Movies Weren't Great

Yes, the duo undoubtedly racked in a lot of moolah, but most of it came from direct-to-video movies. None of the movies were great and they all followed a static storyline, but it didn’t stop the world from watching and collecting their films. All those bad reviews written were a complete waste of time.

5 Credited As One Person

Why did their parents let this happen? Isn’t that completely delirious? The adorable Michelle Tanner was played by both sisters, but oddly enough, the twins, who are their own individuals, were credited as "Mary-Kate Ashley Olsen." Is this what happens when two become one?

4 Mary-Kate Loves Her Body A Little TOO Much

Although Mary-Kate is fit and total #bodygoals since she takes daily runs, she adores her body more than most.

Mary-Kate has openly admitted that she overly enjoys running around in the buff – or in her birthday suit. The only thing that grazes her body is her beloved jewellery.

3 The Products They've Designed Are Strange

Although they got their fashion start when they were only children, the twins are now successful fashion designers. However, their peculiar taste has led them to creating some weird “high fashion” products, like a backpack covered with prescription pills. We’re wondering who the buyers were.

2 An Exhibition Was Dedicated To Them

The twins have kept their lives low-key for over a decade, but two comedians decided to dedicate an entire museum to the "hidden" public figures.

According to Factinate, the curators were so fascinated by how the twins managed to escape the spotlight, that they set up an exhibit in NYC to praise them for doing so.

1 They're Not So Nice To Their Employees

Considering their fame, we’d think their employees would have absolutely no issues. Despite their lack of presence in Hollywood, if the A-listers do something wrong, it will be in the tabloids. Well, they certainly didn’t think of that when they decided to not compensate their employees accordingly. According to Page Six, they were hit a class action lawsuit.

Sources: Page Six, Vogue, The New York Times, Cheat Sheet, Factinate