Ryan Reynolds Might Have Just Revealed the Sex of Second Child With Blake Lively

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Ryan Reynolds might have just pulled an Ashton Kutcher.

The 39-year-old actor has the world on edge after he seemed to reveal the sex of baby No. 2, in a recent hilarious tweet about his daughter's crib.

WATCH: Blake Lively Attends Friend's Wedding in NYC Days After Welcoming Baby No. 2

"The mobile above my daughter's crib is just a whole bunch of NuvaRings. So she remembers how lucky she is," Reynolds tweeted on Friday, sending fans into a frenzy.

While the Deadpool star already has one daughter with wife Blake Lively -- James will turn two in December -- followers were quick to infer that Reynolds' newest addition was also, in fact, a baby girl.

WATCH: Ryan Reynolds Jokes With Fan Asking for Marriage Help: ‘Celebrities Are the Gold Standard for Relationship Advice’

Reynolds and Lively, who gave birth in late September, have yet to reveal any information about their second child -- and didn't confirm their first daughter's name until months after she was born.

But back to the actor's possible slip. Kutcher made a similar gaffe earlier this month, when talking about his daughter Wyatt's reaction to Mila Kunis' pregnancy on the Today show.

"She points to Mila and she's like, 'baby brother' when she points to the belly, and then she points to dad and she goes, 'beer.' So I think she gets there's something in the belly, but I don't quite think that she knows that it's not going to be a plastic doll yet," he said.

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See more in the video below.