The Australian actor really enjoyed working with the 23-year-old beauty on 'X-Men: Days of Future Past' and found her down-to-earth attitude refreshing.
Asked what he likes best about, her said: "There are not a lot of surprises.
"What you see is what you get, and I've met her and worked with her...The way you imagine her to be is how she is.
"She's not only one of the most talented actors I've met, she's one of the most authentic. Very down to earth, no ego. She has a lot of fun doing what she does."
And the 45-year-old star had a great day off camera when the actress and her boyfriend and their co-star Nicholas Hoult joined him and his children Oscar, 13, and Ava, eight, on a day out to a theme park.
Hugh - who is married to Deborra-Lee Furness - told E! News: "We were just on roller coasters -- no security, no this, no backup. Just getting around.
"And she just manages to handle this incredible fame and power that she has with real ease. On top of that, she's a brilliant actor.
"I would happily hang out with those guys because they're really terrific. I had a great time with them."