Sarah Stage introduces James Hunter to the world Credit: Courtesy Sarah Stage

That's one bouncing baby boy! Sarah Stage, the model whose pregnancy went viral after she posted a series of sexy lingerie shots at 9 months pregnant, is introducing her newborn to the world!

While critics weighed in on her shockingly fit and trim body, it turns out Stage is having the last laugh: not only has she given birth to a really big, healthy, baby boy, she's also only got a few pounds of baby weight to lose!

Stage shared two pics of her gorgeous son, James Hunter (born on Tuesday, April 14) aged just two days old, on Thursday, April 16.

"James Hunter (4/14/15) 8.7lbs/22 inches of HEALTHY baby!" the stunning mom captioned the first shot, which showed her little tot swaddled in a blanket with a cute fox beanie on his head. "Thank you for the positive support throughout my journey... It's just beginning!!!"

The second shot, posted a few hours later, shows the little boy's crop of dark hair as he lies peacefully in a striped onesie.

"Love at first sight," the proud mom wrote.

Stage only gained around 20 pounds during the whole of her pregnancy. “As long as the baby is healthy, I don’t think anything else matters,” she told Good Morning America in March. “That should be the most important thing.”

He sure looks healthy to Us!