Doppelgangers: Our unrelated twins

On National Look-Alike Day, April 21, a look at Francois Brunelle's long-running photography project of "doppelgangers" bringing together people who share an uncanny resemblance but no family ties.

Nina Singh and Anna Rubin, photographed in Montreal in 2004. These two women - born on the same day! - look alike, but they are unrelated. (One's parentage is from Eastern Europe, the other's from India.)

Chasen and Malone

Charles Hall Chasen and Michael Malone, photographed in Atlanta in 2014.

"Our mothers don't see the resemblance," Malone told CBS News' Anthony Mason. " And when I met Charlie, I didn't see the resemblance, either."

Smile!

The 64-year-old photographer had the idea for the project after someone said he looked like the actor Rowan Atkinson's character, Mr. Bean. He didn't see the resemblance at first. But then came the inspiration:

"I'll find two identical people, I'll bring them together, and then when they meet they will be in shock," Brunelle told CBS News' Anthony Mason. "And then I will take a picture of them. And that will be amazing, to look at this picture."

Grenier and Galipeau

Normand Grenier and Ahmed Galipeau, photographed in Montreal in 2003.

Duo

When his subjects showed up at a shoot in Atlanta, photographer Francois Brunelle sometimes did a double-take.

Kazar and Walker

Stephanie Kazar and Christy Walker (photographed in Atlanta in 2014) aren't related, either. Kazar hails from Georgia, Walker from Ohio.

"It's very rare you find your own twin," said Walker.

Bryant and Sampson

Ayanna Bryant and Lindsey Sampson, photographed in Atlanta in 2014.

The two first met when they shared a room in college:

"The day I moved in, she walked into the dorm and my mom was like, 'Oh my gosh! She's your twin!'" laughed Bryant.

"I really think that she was the ying to my yang," said Sampson.

McKeon and Zimmerman

Meredith H. McKeon and Heather Zimmerman, photographed in Atlanta in 2014.

Fournier and Madill

Sarah Fournier and Alan Madill, photographed in Toronto in 2001.

Carreau and Royer

Valerie Carreau and Jean Philippe Royer, photographed in Montreal in 2004, look like they could be brother and sister, but they are not - they're a couple.

Siri and Toledo

Nathaniel Siri and Edward Toledo, photographed in Montreal in 2003.

Bartosik and Stusiak

Alex Bartosik and Victoria Stusiak, photographed in Montreal in 2003.

Bowden and Rawe

Word about Brunelle's project began to spread over the Internet. He's received emails from people all over the world - the United States, South America, Europe, New Zealand, and China.

Morgan Bowden and Imogen Rawe, photographed in Bath, England, in 2010.

Stomphorst and Meines

Tamara Stomphorst and Sandra Meines, photographed in Amsterdam in 2010.

Boucher and Desmarais

Danielle Boucher and Jovette Desmarais, photographed in Montreal in 2004.

Bogota

The government of Colombia recently commissioned Brunelle to shoot an advertising campaign to promote harmony. They found look-alikes who often were meeting for the first time during the shoot.

The tag line of the campaign: "Let's choose to see what we have in common."

Velordia and Nova

Juan Felipe Velordia and Oscar Nova, photographed in Bogota in 2014.

Lopez and Rincon

Luisa Lopez and Daniela Rincon, photographed in Bogota, Colombia, in 2014.

Perron and Paul

Marie Chantal Perron and Nancy Paul, photographed in Montreal in 2004.

Rondou and Dube

Pierre Rondou and Calille Dube, photographed in Montreal in 2004.

Girard and Guilbert

Remy Girard and Gabriel Guilbert, photographed in Montreal in 2003.

Gagnon and Dhavernas

Sylvie Gagnon and Caroline Dhavernas, photographed in Montreal in 2003.

Maheux and Brunelle

Jean Maheux and Francois Brunelle, photographed in Montreal in 2004.

Brunelle's project is supposed to end with the book he plans to publish, but he says he has a problem: "If I would go photograph everyone that has written me, I would travel for years!"

Ready For Your Closeups

To participate in the "I'm Not a Look-Alike!" project:

If you know a pair of doubles that can be put together for a photo, or if you are one of them, you can participate in the "I'm not a look-alike!" project by writing to Francois Brunelle at the email address info@francoisbrunelle.com. The information needed is the following:

1. Names of look-alikes
2. City and country of residence of the look-alikes
3. Emails or telephone numbers
4. Photos

For more info:
francoisbrunelle.com
Follow Francois Brunelle on Facebook

By CBSNews.com senior producer David Morgan