Blake Lively and Ryan Reynolds are competing over their daughter's first word

Speaking on 'The Tonight Show with Jimmy Fallon', she said: "We're total rivals. I hear [Ryan] all the time, 'Da-da, da-da,' and then I walk in the room and he's like, 'Ma-ma.' And I'm like, 'How dare you do that?' ... The word 'Da-da' is banned in our house.

"She has to say 'ma-ma' first. I do everything! He does nothing!"

While the 'Age of Adaline' actress may have joked she does "everything" for James, she recently admitted Ryan is such a hands-on dad, he constantly smells "like poop".

She said: "He just smells like poop...he's in full diaper duty. He likes the big ones, because they're easier, so her diapers are like up to her chest."

And the former 'Gossip Girl' star revealed her daughter already looks a lot like her father.

She quipped: "I think she looks like her daddy. I want a maternity test!"