Bradley Cooper learned a lot watching Vince Vaughn try out different ideas on the set of their 2005 comedy Wedding Crashers.

During a SAG-AFTRA Foundation conversation with his fellow Best Actor SAG nominees, the Maestro star was asked to name a moment with a co-star that changed his career.

Cooper named his Wedding Crashers co-star Vaughn, explaining that he felt less pressure to be perfect on camera after witnessing Vaughn trying out new ideas without fear of failure.

“Up until that point, I was always just trying to get it right on camera. Be present and get it right,” Cooper said, according to Variety. “I was just in awe of this human, this man just failing, just willing to try anything. At some point, he was just scatting and caught onto this thing and was doing this song. I loved seeing it, but clearly it wasn’t working. But it didn’t even matter.

“It was all of us watching this artist just explore with complete abandon. It was like a diamond through the middle of my head going, ‘That’s it! That freedom to just be absolutely willing to fail.’ It changed me forever. That was the moment.”

The Hangover star, who played Rachel McAdams’ evil boyfriend Sack Lodge, called the comedy his “huge break” in film amid his run in the TV show Alias.

Vaughn and his co-star Owen Wilson have been working on a sequel to Wedding Crashers with director David Dobkin for several years but development on the project seems to have stalled.

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