Niamh Geaney, Terence Manzanga and Harry English have launched the Twin Strangers project - a challenge to find their lookalikes in just one month
For every person in the world, it is thought there are at least seven other people across the globe who look exactly like them.
And one Irish girl has managed to track down one of hers - who lived just an hour down the road.
Niamh Geaney, Terence Manzanga and Harry English have set themselves a challenge to find their Twin Strangers in just one month.
After setting up a Facebook page two weeks ago, the Dublin trio's mission captured the world's attention.
They began to receive requests to find other people's lookalikes, while still searching for their own, reports the Irish Mirror.
Now Niamh has met one of her lookalikes, Karen Branigan, 29, and the resemblance is pretty uncanny.
Niamh wrote on Facebook: "I found Karen through the power of social media and this weekend we met up in real life!
"Not going to lie, we were both pretty freaked out about seeing our double in the flesh."
She told Mail Online: "For the entire duration of our encounter I pretty much stared at her.
"I couldn’t get over her face, and some of the expressions she would pull I would think to myself or say aloud, "Oh my God that’s my face.
"I can’t remember the number of times I said "this is so freaky". It was truly amazing."
You can find out more about the Twin Strangers project here.
What do you think? Would you like to trace your Doppelgänger?