Update (4/17/15): This post was updated with new info and photos of Sarah Stage's baby.
If you're not familiar with the name Sarah Stage, you might know her better as the six-pack abs mom who Instagrammed her way through pregnancy.
After sparking some controversy by documenting her impossibly-taut pregnant belly -- which caused a mix of body shaming and body envy -- the model gave birth on Tuesday to a baby boy named James Hunter. The baby boy weighed 8 lbs., 7 ounces, and was 22 inches long.
Stage later shared two adorable photos of her son below, along with the captions: "Thank you for the positive support throughout my journey... It's just beginning!!!" and "Love at first sight."
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Sherry Huang is a Features Editor for Parents.com. She loves collecting children's picture books and has an undeniable love for cookies of all kinds. Her spirit animal would be Beyoncé Pad Thai. Follow her on Twitter @sherendipitea.