Twins, specifically identical twins, became an unexpected surprise at Milan Fashion Week when two major clothing brands chose to play with the concept in different ways.  

The luxury brand Gucci had hunted down a total of 136 models that were twins.

Side by side, they then walked down the catwalk in similar outfits.  

The fascinating thing about two  

- It was a visual feast to see all the mirrored looks, says Allyson Shiffman, editor at the fashion magazine Vogue Scandinavia.  

In the clothing brand Sunnei's fashion show, model twins rose one by one from the audience and walked through a revolving door on stage.

Out came the other twin with the display's clothes.

Something that created the illusion that it was a model that changed very quickly or, according to Shiffman, a manifestation of an identity conflict.  

- For us from the outside, we see twins as an aesthetic anomaly that is very interesting.

But those who grow up in it can have a complicated relationship with their "doppelganger".

In fashion, there is a tendency to use twins when it comes to identity.

Twin sisters from Sweden  

The 18-year-old twin sisters Ella and Nike Norman from Stockholm were two of the models who walked in Sunnei's fashion show in Milan.

They have been working as models since they were recruited by a modeling agency in town 3-4 years ago.  

- It is very grateful to be with someone who you have grown up with all your life, who you know well and are very comfortable with.

You are never alone in anything, says Nike Norman. 

Is it ever hard to work together? 

- When you really annoyed each other, says Nike. 

- Or at the end of the day when you're tired and everything becomes fun.

Then it becomes a challenge to hold the mask in a pose, says Ella.  

In their private lives outside of work, Ella and Nike say that it can be stressful to always be referred to as "the twins", but in a work context it is different.  

- They often hire us precisely because we are twins and then you understand what you are getting yourself into.

Often it's people you've never met before, so it won't be the same thing if they don't see a difference in you, says Nike.

See more about twins in the fashion world in the clip above.