Actress Margot Robbie has called her "The Wolf of Wall Street" co-star Leonardo DiCaprio a great kisser and says he was like a big brother to her.

The 23-year-old admits her friends were disappointed when she shared the details of her intimate encounters with Dicaprio as they hoped for `fireworks`, reports a web site.

"I'm still pinching myself. Leo has always been my favourite actor and he became this wonderful big brother. All of my girlfriends interrogated me and asked, 'Is he an amazing kisser?' I'd say, 'All I know is his screen kissing is great'."

"Then they'd get upset and say, 'Tell me there were fireworks.' There weren't. You do the takes in 17 hours, and its just hot and sweaty," Robbie said.

The actress has quite a few risque sex scenes with DiCaprio in Martin Scorsese directed "The Wolf of Wall Street".