'I miss being prego!' Lingerie model Sarah Stage posts a racy throwback image of her famous pregnancy six-pack to celebrate her son's first birthday

Sarah Stage's pregnancy six-pack made the internet go wild in 2015, and nearly a year after her son's birth, the proud mom has shared a throwback photo of herself posing in her underwear just a month before his arrival. 

The 31-year-old from Los Angeles, who found fame by documenting her pregnancy with a series or racy lingerie shots, took to Instagram on Tuesday to remind her two million followers that she was insanely fit last April - despite being nine months pregnant.

'Some days I miss being prego it was around this time last year when I was #36weekspregnant #9months with James,' she captioned the selfie, which sees her flaunting her barely-there baby bump. 

Scroll down for video 

Just a reminder: Controversial model Sarah Stage took to Instagram on Tuesday to share this throwback picture of herself when she was nine months pregnant 

Loving mom: The 31-year-old from Los Angeles gave birth to her son James Hunter on April 14, 2015. She shared this adorable photo of them together in February to celebrate his first Valentine's Day 

In the old snapshot, Sarah is modeling a pale pink bra and a yellow lace thong as she rests one hand on her stomach. 

And despite the photo being almost a year old, fans are still amazed by her unbelievable physique, with more than 15,000 people liking the photo since it was posted. 

'I wish I looked like this at 36 weeks!' one person wrote, while another added: 'I would miss it too if I looked like this.'

Sarah, who is of European and Costa Rican descent, faced ongoing backlash over her sultry pregnancy she photos, and one woman noted that she remembers the criticisms spurned by this particular snapshot.  

Hot momma: Last week, Sarah donned stilettos and ripped jeans to take James for a walk  

'American Dream': Sarah celebrated by her first home with her husband Kristopher Jason by sharing this heartwarming family photo in February 

'I remember all the b****ing about this photo,' she said.  

Sarah welcomed her son James Hunter into the world on April 14, 2015, and while her critics claimed that her unusually trim figure could be damage to to her unborn child, their fears were unfounded. James weighed a healthy eight pounds, seven ounces at the time of his birth.

Unsurprisingly, the model was back to flaunting her taut tummy just nine days after James was born, and now, almost a year later, she is getting ready to plan her son's first birthday party.

It's been an exciting couple of months together for Sarah, who revealed on Instagram in February that she and her husband Kristopher Jason have purchased their first home together. 

Unbelievable physique: Sarah's fantastic figure has earned her two million Instagram followers 

Courting controversy? Sarah faced backlash in December when she shared this Snapchat selfie of herself trying on clothes while her then-eight-month old was lying on a blanket on the floor 

'Officially homeowners! #AmericanDream I still can't believe it [sic],' she wrote. 

In the image, Kristopher is holding their son while they happily pose in front of their new house. While Sarah looks stunning in tight high-waisted jeans and a gray crop top, baby James looks thrilled with his parents purchase. 

Kristopher also shared the happy photo on his Instagram page, writing: 'From college students to owning our first home... we did it together. #11 years #TheAmericanDream [sic].' 

Since the birth of her son, Sarah continues to document his life, sharing numerous images of her precious little boy posed both with and without her. 

Momma knows best: Although she received criticism that maintaining such a small figure while pregnant could harm the baby, her son James Hunter was born healthy, weighing 8lbs 7

Happy time: Sarah is pictured coddling her newborn last April while sitting on the floor of his nursery 

However, from her breastfeeding photos to her bikini photoshoots just three weeks after giving birth, Sarah hasn't had any trouble strumming up controversy after welcoming James into the world.

In December, Sarah was heavily criticized for placing her then-eight-month-old infant straight onto the carpet at a mall in Sherman Oaks before taking pictures of herself in the mirror while she tried on outfits.

After she was accused of being a bad mother, the model was forced to defend herself by sharing another image on Snapchat which showed her son James asleep on top of a clean blanket. 

She sent the new image to TMZ and also told the site that he was in the fitting room with her at the Californian mall for about an hour.

Although the picture shows the baby was comfortable, many on social media still felt it was unacceptable, while others argued that Sarah should be left alone. 

When they're not hitting the mall together, Sarah takes James on long hikes in his stroller and on trips to her gym so she can keep her unbelievable figure.