Reese Witherspoon "Can't Process" Robert Pattinson & Kristen Stewart's Fame: "It's Strange"

Reese Witherspoon got the chance to work with Robert Pattinson on Water for Elephants and truly thinks the world of him. And although she's a superstar herself, Reese has a hard time imagining what it's like to experience overwhelming fame, the kind Rob and girlfriend Kristen Stewart deal with every day of their lives.  

OK! GALLERY: ROBERT PATTINSON "EMBARASSED" BY HIS BAD SEX SCENE WITH REESE WITHERSPOON

"I've never honestly experienced what Rob has, going to premieres and there's just millions of people waiting for him to just touch them," Reese explains to MTV. "I think it must be strange, but I don't even know how to process what he deals with and what Kristen deals with." 

But Reese, who experienced firsthand the kind of adoration Rob receives at the Water for Elephants premieres, thinks that, "despite the circumstances, he's a really cool guy." 

"I would say Rob is the hardest working person I have ever worked with, honestly," Reese gushes of the Twilight star. "Professional, hardworking, so appreciative, more grateful than I've ever seen anyone for where he is in life." 

OK! VIDEO: WATCH ROBERT PATTINSON DROP THE F-BOMG WHEN REFERRING TO REESE WITHERSPOON AS HIS "LOVER" 

Wow, what a compliment, but obviously, Rob feels the same about Reese!

"There's definitely something reassuring about how nice and normal Reese is because you don't see it that often," Rob told PopSugar of Reese last year. "Just to see people who've won Oscars and such. They're just nice, incredibly present actors. They're true professionals and really nice people."

Check out the video, below.

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