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Blake Lively, left, and Ryan Reynolds attend amfAR's New York Gala honoring Harvey Weinstein at Cipriani Wall Street in New York. Image Credit: AP

Ryan Reynolds apparently got in some trouble with wife Blake Lively after revealing the gender of their new baby.

During an appearance on Conan on Wednesday night, Reynolds confirmed that he’s now the father of two girls, quipping that there’s “a lot of oestrogen” in his house.

In an Instagram post, Lively said that Reynolds “got himself into huge trouble” on Conan and he offered her milk and cookies to make up for it.

The baby was born in September and her name still hasn’t been made public. She joins big sister, James, who will be two next month.