emily-blunt-the-tonight-show

During a Monday appearance on The Tonight Show, The Girl on the Train star Emily Blunt opened up about family life with husband, The Office actor John Krasinski, and their two daughters: Hazel, 2, and Violet, 4 months.

“Hazel had my accent for a really long time and would say things like ‘water’ which I was really proud of,” the British actress, 33, told Fallon. “And then the other day she goes, [American accent] ‘Can I have some water?’ And I went, ‘It’s water.’ And she was like, ‘No, it’s [American accent] water.‘ ”

That aside, it sounds like Hazel is adjusting well to big sisterhood.

“We were concerned Hazel would be disinterested and … she quite likes her,” Blunt shared. “I turned my back for a second yesterday and I went to the kitchen to make us some lunch and I came back to discover Hazel just dragging Violet off her play mat … Violet looked a bit wide-eyed and I just said, ‘Oh, Hazel, I don’t think we want to do that.’ And she goes, ‘I just want to get her in a better spot.’ ”

Blunt was pregnant with Violet while filming The Girl on the Train, and the costume designers tried everything to conceal her growing baby bump.

“I had very hideous costumes … horrible overcoats,” she admitted. “There are a couple of stunts in it, so I was being a bit wussy about standing up too quickly, and Justin Theroux — who is fabulous and in the movie with me — he’s been a friend of mine for a long time and he was like, ‘Are you pregnant?’ and I was like, ‘Yes, but you can’t tell anyone.’ He was the only one.”

The Girl on the Train hits theaters on Oct. 7.