Sarah Stage, the model who became a massive celebrity during her pregnancy, just showed off her post-baby bod and she's looking super fit.

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Less than a week after giving birth to her child, Stage took to Instagram to snap a photo of herself in a revealing bikini. She dons a leopard-printed top with black bottoms as she takes a mirror selfie and shows off her washboard abs.

Stage captioned the photo by letting everyone know that she's heading back to exercising after having her son, James.

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"4 days post baby," she wrote. "Total pregnancy weight gain was 28 pounds. I'm excited to resume my workouts in 5 weeks!! #JamesHunter #HealthyBaby #GrannyPanties."

On Monday, the model added another photo to her page, this time of her newborn son. Baby James wears a tiny black onesie as his feet touch each other and he has his eyes closed.

Stage gained a good haul of popularity on social media when she shared pregnant photos of herself where her belly looked pretty small even though she was almost ready to deliver her child. At nine months pregnant, she snapped a side shot of herself where her stomach only went so far. And not only that, but even her abs could be seen in there.

Stage currently has more than one million followers on Instagram, making her one of the most popular hits on the Internet to date.

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