There are some families out there where the siblings are undeniable related—they share common hair color or striking physical features that assure you that they are made up of the same genetic material. But there are other siblings out there, who share the exact same parents, lineage, and ancestry yet they look nothing alike! These strange pairings occur in regular folks and in celebrities, as well. And some of the outcomes are crazy-- not just different colored hair or eyes, but skin as well!

The answers to how two siblings can look so dissimilar are complicated; it can be due to a variety of factors from environment to the versions of the genes. Parents pass down chromosomes to their children in pairs, and suffice it to say that the pairings can lead to many different physical outcomes in their offspring.

We all share a morbid fascination of staring at siblings and thinking, "Are you SURE you're related?" Don't worry, you don't have to scour the internet looking for them anymore. We have put together a list of outrageous siblings that look nothing alike,  that range from celebs to twins living in Gloucester. Some of them you will have to see to believe...

16 Lucy And Maria Aylmer

Lucy and Maria Aylmer are sisters; not only are they sisters but they are TWINS. They both have the same mother and mother, but genetics gave their parents quite the surprise at birth!

Lucy explains that her mother, "...had no idea that we were so different. When the midwife handed us both to her she was just speechless.”

Lucy takes after her father, Vince, who is Caucasian. Her light skin, blue eyes, and red hair sets her dramatically apart from her sister. Maria looks like her mother, Donna, who is half-Jamaican. She has dark eyes, dark hair, and caramel colored skin.

Lucy and Maria are fraternal twins, meaning they came from two different eggs that were fertilized by two different sperm. They may look different but the girls are not only sister but best friends.

15 Blake And Robin Lively

Blake Lively is currently holding the number one position right as “America’s Sweetheart”. She is beautiful, talented, and has two adorable kids with her super hunky, and equally as famous, husband Ryan Reynolds. Blake has been in the spotlight for years now but she has kept her personal life much to herself so most of us do not know that much about her.

Did you know that Blake has a sister who is also in show business? That’s right—her sister, Robin, is an actress as well. She has been in everything from “The Karate Kid III” to “It’s Always Sunny in Philadelphia”. Although the two do not look much (or anything) alike, they do share at least one obvious trait: both were pulled to fame by acting, and have had successful Hollywood careers.

14 Kian & Remee Hodgson

People always have such a hard time telling twins apart-- but it is not a problem with Kian and Remee Hodgson. The girls are fraternal twins and each pulled from different parts of their parents genes. Both of their parents have Caucasian mothers and African-American fathers.

I had friends that were identical twins and in High School they used to get into arguments because they looked exactly alike but had completely different personalities. Everyone got them confused and expected them to like the same things. They loved the fact that they had a best friend in the house but they were always frustrated by their identical looks. Kian and Remee got the best of both worlds-- a best friend that is the same age, lives in the same room, but looks completely different.

13 Nicole And Antonia Kidman

Most people are aware of Nicole Kidman—her illustrious acting career has kept her at the forefront of famous actresses for years. She has a really unique look; blonde curls, a long face, dark brown eye brows in a perpetual arch, and she seems like she would be six foot tall in person.

You may not even know that Nicole has a sister—she does! Her name is Antonia. Antonia is beautiful like her sister but in a completely different way. (Side note- she is in entertainment, too-- in Australia!) Her skin and hair are both darker tones, and even the bone structure of their faces and bodies are different.

Standing next to each other, with their faces turned in, you would still never know that the two are related.

12 Ashton And Michael Kutcher

I feel like an idiot but I had no idea that Ashton Kutcher even had a brother. Not only is Michael his brother but his fraternal twin. (Remember—fraternal means that they come from two different eggs so although they are born at the same time, they are just as “alike” as siblings born 5 years apart.)

Michael has cerebral palsy which does have some physical limitations; the disability can effect movement, speech, and hearing. But that has not held Michael back, even though growing up alongside Ashton had its challenges.

He describes, “I decided to stop being Ashton’s brother and start being Michael Kutcher.”

He has become a motivational speaker regarding disability awareness and overcoming obstacles. His brother may be famous but both of them share quality of character, to say the least.

11 The Harris Siblings

This family snapshot shows a group of happy, smiling kids with their mothers. Even though the kids all look completely different, they are all closely related. It just goes to show that you cannot judge a book (or family) by its cover-- genetics are a complicated matter.

Sharon and Sonia Harris are sisters and are of mixed-race. They each have two kids, and each pair of children has one that favors their Caucasian genes and one that favors their African-American genes. The boys, Cameron and Kyle, are twins!

Sonia told the Daily Mail, "The doctors said it was very unusual, but that it does happen. People don’t realise they are twins at first, and although they are not identical, once I tell people they are twins they do see the similarities."

10 Luke, Owen… And Andrew Wilson

We all know the Wilson brothers; the dynamic-duo have been in movies for as long I can remember. Each brother has their own look, but when they stand next to each other it is quite obvious to see that they are related. Their smiles are both lilting and their noses are both notched in an attractive, bad-boy sort of way.

But did you know that there is a third brother? Andrew? And the craziest thing is that you have probably seen him in a movie and had no idea he was a part of the famous Wilson family.

Andrew has had a good career himself; he has been in “The Royal Tenenbaums”, “Charlie’s Angles”, “Zoolander”, “Never Been Kissed”, Rushmore” and a ton of other movies. But he does not look like his brothers.

9 Taylor And Austin Swift

We all adore Taylor Swift—we cannot help it. She is vivacious, she is funny and her music penetrates into your soul even if you don’t want it to. But for as famous as she is, there is a lot that she keeps private—like the fact that she has a brother.

Austin Swift is Taylor’s younger brother who is currently pursuing an acting career. He is a really good looking young man but shares none of the classic traits that we have come to associate with his famous sister. He has dark hair and a more serious nature.

In an interview with Vanity Fair, Austin described himself as a 250 pound High Schooler who was lacking in the friends department. But he has since found his proverbial self and is focusing on his career.

8 Jared And Shannon Leto

Jared Leto is wooed over by women across the world. His long wavy hair seems to be catnip for women everywhere. He has been slammed by homophobes for looking “metrosexual” but I have not met a female who does not think that is finer than sand. He has had a long acting career and is also a successful musician.

But many people are not aware that Jared’s older brother, Shannon, is also in the band “Thirty Seconds To Mars”. Though the two are constantly together walking red carpets and performing in concert, most of us had no idea that they were even related.

Maybe it is the hair? The age difference? Or maybe like the many pairings we have seen already, one sibling pulled from the mother’s genes while the other from the father’s.

7 Hussain And Khardra Bisad

You always assume that siblings are going to look alike, whether it is sharing the same hair color, skin color, or basic physical description. But Hussain and Khardra Bisad are siblings-- but look nothing alike!

The siblings, from Somalia, share the same mother and father but it is hard to guess that from looking at them. Did I mention that they are also twins?

Houssain stands at 7 feet 7.5 inches tall and at one point was dubbed England's tallest man. His twin, Khardra, is unusually small, even for a woman. Doctors think that Houssain's incredible height is most likely due to a medical condition; probably a brain tumor that is causing his body to keep growing. He wears a size 26 shoe and weighs 460 pounds. His hands are close to foot long!

6 Gisele And Patricia Bundchen

Gisele Bundchen is a famous Brazilian/German model who earned her way into becoming one of the highest paid in the world. She was one of Victoria’s Secret’s Angels for seven years, and became the modern face of the term “super model”. Gisele married New England Patriots quarterback Tom Brady and has two children with him.

But did you know that Gisele has FIVE SISTERS? And get this—one of them is her twin. (Even though they are fraternal, we always expect twins to look alike.) Patricia is younger than Gisele by five minutes, but that should not account for the fact that they look nothing alike. Patricia is gorgeous, as well. There is no denying that their parents create beautiful children. But even when their faces are side-by-side, it is hard to see the resemblance.

5 Zooey And Emily Deschanel

Both of these siblings have starred on television shows that I have been watching for years and yet I just recently figured out that they are sisters. Even knowing that they are related and staring at both of their faces, it is hard for me to pick out any similarities. Zooey is a tiny, dark haired actress who seems bubbly and energetic. SHe stole our hearts singing in the movie “Elf”. Emily is classic looking and striking.

But both sisters have had highly successful careers, completely independent from one another. Zooey has been in a slew of movies and has her hit show “New Girl”, while Emily has been the star of “Bones” for what feels like 35 years. Though their physical genes may differ, clearly their passion and talent are a shared genetic trait.

4 Ryan And Mandi Gosling

I have been obsessed with Ryan Gosling since he played Noah in the Nicholas Sparks remake of “The Notebook”. How is it that I never knew that he had a sister? Most of the internet, apparently, did not know either until Ryan brought his sister along to the 2017 Oscars. Immediately folks were wondering where Eva Mendes was, and who his gorgeous date was. Had they broken up? Who was this new chick?

Clearly, they look so dissimilar that the whole social media community was convinced that Ryan Gosling had dumped his longtime girlfriend and brought his new fling along to the Oscars. The rumors were crazy and Twitter was amuck of fans contemplating this “new romance”.

Oops. Sorry internet. That was just a sweet brother taking his sister as his date.

3 The Nurse Siblings

The Nurse family has what they like to refer to as a "rainbow" of children; each child looks different and yet they all share the same mother and father. As we have seen, genes can present themselves in sorts of different ways!

Carla Nurse, the mother, loves her rainbow family but explains that here is a downside to everyone looking dissimilar. People assume that each child has a different father and judge her, her husband Cornel, and her kids negatively for it.

Carla says, "When people think I've cheated it makes me so angry. I would never stray from Cornel."

Despite the occasional glance that the family gets, they all relish in their uniqueness. They embrace the fact that reflect a spectrum of race and call themselves the "United Nations" of families.

2 Sophia And Sandra Vergara

Sophia Vergara stole America’s heart when she landed (and nailed) the role of Gloria on the hit TV show “Modern Family”. She has since become a symbol of an attractive, hourglass figured, Latina bombshell. And guess what—you probably didn’t see this coming but—she has a sister. And her sister looks nothing like her.

Sandra Vergara has the same dark hair and Latina roots, but their shared physical traits stop there. Both are beautiful and exotic but you probably would not know they were sisters, even if they were beside each other.

One publication has shed some light on this particular genetic phenomenon. E-Online has stated that though Sophia and Sandra consider themselves sisters they are “technically cousins, Sophia’s family having adopted Sandra when she was a month old.”

1 Jennifer, Ben, And Blaine Lawrence

Jennifer Lawrence shines so bright that it probably not occurred to us that there could be others out there with shared genetics. But Jennifer has two brothers—Ben and Blaine—who she is very close with. They do not look anything alike, but that does not stop her from bringing them to most red carpet events. Her older brothers were present during the Spirit Awards and also at the Academy when she won Best Actress.

Sometimes when the siblings are different genders it can be harder for people who do not know them well to pull out shared traits. Apparently this is the case with the Lawrence siblings because I, for one, would never guess that they were related. Even Ben and Blaine do not look very similar; different colored hair, shaped faces, and height.

Sources: Genetics.Org, Huffington Post, IMDB, Vanity Fair, Viral Gasp, Daily Mail, Tallestman.com