Ali Larter visited The Tonight Show on Friday and revealed that she's pregnant! The 38-year-old is expecting her second baby with husband Hayes MacArthur.

Alicia Keys Announces Pregnancy Via Social Media

"I came on and I was pregnant and it went so well," she said of her appearance on the show three years prior. "And I said to my husband, 'I'm going on Fallon, you know what that means - gotta get pregnant!'"

The Kitchen Revelry author quickly stood up and showed off her growing baby bump. Fallon leaned in to her belly and said,"Hey buddy! I can't wait to meet you! We're going to be friends."

The Legends actress explained that she was attempting to hide her baby bump as much as she could.

"I was still shooting my spy drama," she said. "I had to be a covert spy in my real life, too, so I'm wearing blazers and push-up bras and everything you can do to distract."

Larter and her husband married in 2009 in Kennebunkport, Maine, and they welcomed their firstborn, son Theodore, in 2010. The actress revealed that her son is excited to be a big brother.

"We've told him about him, and I actually will say, 'Teddy, wait, it's talking to you,' and he'll be, 'What Mom, what's going on?' And I go, 'It says that it loves Batman and is wondering if it can watch it with you?' He goes, 'Oh my God, Mom! Batman, I can't even watch it, Mom, can I watch it with the baby?'" she said.

Before the show, Larter shared a photo of herself on Instagram with the caption, "Backstage at @fallontonight I'm going to surprise @jimmyfallon with some big news!"