Priceless photos capture mom's moment of surprise after giving birth to a boy

One couple got the shock of a lifetime when they learned their new baby's sex wasn't what they expected.

Throughout her pregnancy, Kim Guiley of Santa Cruz, California, had been certain the baby, her second child, was a girl, even though she and husband Travis were hoping for a son.

Susannah Gill / Susannah Gill-Photographic Storytelling
Kim and Travis Guiley's hilarious reactions upon learning their baby is a boy

"I kind of talked myself into it," Guiley, 28, told TODAY. "I guess it's the power of persuasion! And I should know better because I'm a doula, and I work with babies and births, and I know you can never have any expectations about anything."

"I was really sick with this pregnancy, and there's a correlation between sickness and having girls, so I think that partially contributed, too," she added. "And my 2-year-old daughter thought it was a girl. I had all these silly reasons."

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Susannah Gill / Susannah Gill-Photographic Storytelling
The couple expected the baby to be a girl.

Now photos of the moment the couple found out they were wrong during the July birth, captured by photographer Susannah Gill, have caught the attention of the internet.

RELATED: Photographer captures mom's surprise when she delivers boy

"I opened his legs and was just shocked," Guiley said. "I mean, you saw the look on my face — you can't make up that look. It was very surprising, and I didn't realize how much I was hoping for a boy until that moment."

Susannah Gill / Susannah Gill-Photographic Storytelling
They named the baby boy Theo.

Guiley, who blogged about her home birth, added that she experienced a miscarriage in 2015, and she suspects that's also part of the reason she had opted out of learning the baby's sex.

"After the miscarriage, I was just really attached to having a healthy baby, regardless of sex," she said. "My husband wanted to find out, and I said, 'No, let's have fun with it.' During the ultrasounds, we got to look when they showed us the head and upper body, and as soon as they got mid-baby, we would look away."

Guiley and her husband were thrilled when they saw the photos.

Susannah Gill / Susannah Gill-Photographic Storytelling
The happy family with their new baby.

"I was just in hysterics," she said. "We were cracking up. That face! I don't even think I could replicate that face. I was truly, truly shocked."

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She said the photos "extend the celebration" of welcoming their son, Theo, into the family.

"He's such a joy," Guiley said. "His sister is so enamored with him. I just really feel like our family is complete."

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See this expectant couple's gender reveal stunt fail hilariously

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See this expectant couple's gender reveal stunt fail hilariously

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