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During a Thursday appearance on TODAY, actress Olivia Wilde opened up about her upcoming horror film, The Lazarus Effect, and her 10-month-old son Otis.

“He’s about to walk,” gushed the new mom, 30, of her baby boy. “He’s teetering and I just don’t want him to do it while I’m at work.”

And it sounds like Olivia and her fiancé, SNL alum Jason Sudeikis, have a musical genius on their hands.

“He’s so smart and plays the piano all day long,” she shared. “He’s really musical, so we’re trying to encourage that.”

Speaking of Otis, when the actress was 8-months pregnant with him, she shot scenes for her upcoming horror flick.

“If you look really closely you might be able to tell I’m like a little puffier,” she said of doing re-shoots for The Lazarus Effect. “But it was really funny because the image of me with the lenses and the death makeup with this giant belly. It was like a whole different horror movie.”

She added: “It really was just fun letting all the rage out. I’ve always wanted to play the scary part.”

As for Saturday Night Live‘s recent 40th Anniversary special, the actress was thrilled to help her fiancé celebrate.

“I’ve always loved SNL,” she shared. “I was so proud of the entire SNL family and so proud of Jason. Just to see that they properly celebrated was amazing.”