Shailene Woodley says George Clooney plays fart jokes on set.

She enthused to Stylist magazine: "He's incredible. There's this saying that goes, 'as women we can be pregnant with the world' - we have space for kindness and compassion. George is the male version of that.

"If [a place] is messed up, he says, 'I'm going to go to Africa and do something about it; I'm going to go to Obama, and talk to him about things that aren't working.' He's an ambassador of goodness.

"He's also the ultimate prankster. He'd have fart machines on his phone and he'd mix hard boiled eggs with raw eggs which would splatter everywhere. He doesn't take himself seriously at all."

The star also loved working with Kate Winslet on new teen dystopia flick 'Divergent' and was impressed by how humble and positive she was about everything.

Revealing what advice the veteran actress gave her, Shailene said: "What a powerful, strong, normal woman! She said, 'Some people make it harder than they need to', and that really resonated with me. Life is easy when you see happiness and humbleness in everything and Kate sees that."