Celebrities are known for quickly slimming down after giving birth, but Ninel Conde may have just set a record.

The singer and actress shared a picture that compared her baby belly to her belly a week after having given birth.

"On the left the 20th of October before I left the hospital ; to the right, a week after giving birth to #BbEmmanuel..." she said. "The best thing is that this is without diets, just breastfeeding my precious. Moms say yes to maternal milk. It's the best for both!!!"

The black-and-white image has sparked criticism, as well as curiosity.

One user said what she was saying was a "vile lie" because her job revolves around her being in good shape.

Others said that Conde's look was very achievable if one didn't overeat during pregnancy.

The last group of people are demanding more specifics about what Conde did to get back in shape so quickly.

Conde also got many requests to see just the post-pregnancy picture by itself. Later that the same day, she reposted the picture in color. The second image zoomed in on her belly.

"I know it seems incredible!" she said. "For those who asked me for the picture in color, here it is. The secret? A good body shaper for after giving birth, a good firming cream and above all, breastfeeding! And an entire life exercising ladies! #breastfeeding #oneweekafterhavingababy #goingformore #healthymom."

This just left her followers with more questions, such as what firming cream she uses,. Conde, however, has not answered these questions so far.

Meanwhile, the star's son has already made his magazine debut. Conde and boyfriend Giovanni Medina posed with their newborn son in a series of photographs. Conde is dressed casually in the pictures, but she also looks glamorous wearing makeup and Chanel earrings. She shows off her perfectly styled hair as well.