It’s hard to imagine Hollywood veteranLeonardo DiCapriofreezing up around anyone, but there was at least one exception in his professional life:Luke Perry.

“I grew up with him on[Beverly Hills]90210, looking up to him as literally the coolest dude on Earth and honestly when I was on set, I was starstruck,” DiCaprio toldExtraat the film’s Los Angeles premiere on Monday night.

“We got to sit down and chat. He couldn’t have been a more amazing human being,” he added of his late costar. “It’s a real tragic loss.”

Jack Perry/Instagram

Luke Perry’s Son Jack

Leonardo DiCaprio.CraSH/imageSPACE/MediaPunch

Leonardo DiCaprio

“Luke Perry was a kindhearted and incredibly talented artist,” the Oscar winner’s tweet began. “It was an honor to be able to work with him. My thoughts and prayers go outto him and his loved ones.”

Michael Loccisano/Getty; JB Lacroix/WireImage

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During his chat withExtra, DiCaprio went on to refer to Perry as “the kindest, sweetest human being you could every encounter.”

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In an interview withEsquire, DiCaprio recalled having a “butterfly moment of like, ‘Oh my God, that’s Luke Perry over there!’ ” the first time he saw him on set — and Pitt, 55, agreed, saying, ” ‘That’s Luke f—ing Perry!’ We were like kids in the candy shop because I remember going to the studios and [Beverly Hills, 90210] was going on, and he was thaticon of coolness for us as teenagers.”

“It was this strange burst of excitement that I had, to be able to act with him,” Pitt continued. “Man, he was so incredibly humble and amazing and absolutely committed. Hecouldn’t have been a more friendly, wonderful guyto spend time with. I got to sit down and have some wonderful conversations with him. It was really special.”

Once Upon a Time in Hollywoodopens Friday in theaters nationwide.

source: people.com