Dad can't tell his daughter and her 'twin stranger' apart

This Dad Can't Tell His Daughter and Her Doppelganger Apart

A teenager tracked down a stranger who looked so much like her that even her own dad couldn't tell them apart.

When faced with Shannon Lonergan, 21, from Ireland, and her "Twin Stranger" Sara Nordström, 17, from Sweden, Shannon's father was left speechless.

READ MORE: Woman Comes Face-to-Face With Stranger Who Looks Just Like Her

"I was shocked," he says in a video. "I'm still getting over it.... Amazing. I'm speechless. I definitely think Sara could be my daughter."

Shannon added: "My dad got an awful fright!"

The women tracked each other down through the website,, which seeks to match people with their doppelgängers around the world. The two teens finally met face-to-face in Dublin.

"When I saw Sara standing there, my heart literally jumped into my mouth," Shannon said. "We just stood there like, 'Oh my god, this is so weird!'"

READ MORE: Twin Teens, One Black, One White, Celebrate Their Differences

Three friends in Ireland set up in a bid to connect with people who look just like them. They say everyone has seven doppelgangers somewhere on the planet.

One member of the trio, Niamh Geaney, has found three lookalikes so far.

Related: See some celebs and their lookalike stunt doubles:

Celebs and their stunt doubles
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Dad can't tell his daughter and her 'twin stranger' apart
HOLLYWOOD, CA - JUNE 1: Actress Jennifer Garner (R) and her stunt double Shanna Duggins present the 'Best Overall Stunt by a Woman' award on stage during the 3rd Annual Taurus World Stunt Awards at Paramount Studios June 1, 2003 in Hollywood, California. The show will air Monday, June 9th, 8:00 pm EST/PST on the USA Network. (Photo by Robert Mora/Getty Images)
NEW YORK, NY - OCTOBER 31: Donnie Wahlberg and his stand-in on the set of 'Blue Bloods' on October 31, 2014 in New York City. (Photo by Bobby Bank/GC Images)
HEROES -- 'Company Man' Episode 17 -- Aired 2/26/07 --Pictured: (center) Hayden Panettiere as Claire Bennet with her stunt doubles (Photo by Dave Bjerke/NBC/NBCU Photo Bank via Getty Images)
NEW YORK, NY - MARCH 22: Anthony Molinari, stunt double for Mark Ruffalo and Mark Ruffalo filming on location for 'Now You See Me' on March 22, 2012 in New York City. (Photo by Bobby Bank/WireImage)
NEW YORK, NY - JUNE 22: Actor Andrew Garfield (C), his stunt double William Spencer (R) and a second stunt double are seen on set of 'The Amazing Spider-Man 2' on June 22, 2013 in New York City. (Photo by Raymond Hall/WireImage)
MIAMI, FL - APRIL 14: (L) Dwayne Johnson and his stuntman sighting on the set of 'Pain And Gain' on April 14, 2012 in Miami, Florida. (Photo by Larry Marano/Getty Images)
NEW YORK, NY - JUNE 24: Taylor Lautner with his stunt double on the set of 'Tracers' on June 24, 2013 in New York City. (Photo by Bobby Bank/WireImage)
NEW YORK, NY - SEPTEMBER 28: Jim Caviezel and his 'stunt double' filming on location for 'Person of Interest' on September 28, 2011 in the Brooklyn borough of New York City. (Photo by Bobby Bank/WireImage)
NEW YORK - JULY 16: George Bartenieff and his stunt double on location for 'Curb Your Enthusiasm' on the streets of Manhattan on July 16, 2010 in New York City. (Photo by Bobby Bank/WireImage)
NEW HAVEN, CT - JUNE 28: Shia LaBeouf stunt double and Harrison Ford stunt double riding a motorcycle during filming of the latest 'Indiana Jones' movie at Yale University Campus on June 28, 2007 in New Haven, Connecticut. (Photo by Bobby Bank/WireImage)

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