October 06, 2015 12:05 AM

Chris Pratt is showing support for his brother-in-law’s project – in the most adorable way.

The Passengers star shared his cute middle school yearbook photo on his Instagram page.

“Before selfies, this was what 13 looked like,” Pratt, 36, captioned his Instagram photo along with a sweet note for his wife Anna Faris‘ brother.

“#Being13 looks like this now: So proud of my brother in law, friend and hunting partner Bob Faris for his involvement in this great project. Check it out!!”

Robert W Faris is an associate professor of sociology at the University of California at Davis and co-collaborator of Anderson Cooper 360‘s special report #Being13: Inside the Secret World of Teens.

Cooper showcases the results of a two-year investigation in which he accessed the social media accounts of hundreds of eighth graders across the country.

The CNN team conducted in-depth interviews with their families and social psychologists in order to find out what’s really going on in the minds and phones of real teenagers.

Several celebs joined Cooper as they took to their social media accounts to bring awareness to the #being13 project including Cher, Olivia Culpo and Anjelica Huston.

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