Shapewear—with its smoothing and cinching abilities—gives many people an extra boost of confidence. Everyone from Tina Fey to Michelle Obama swears by Spanx. The former First Lady went as far as saying she wears them “with pride.”

That’s great, but Milly Smith, a body-positive advocate, illustrated how easily shapewear can warp our opinion of our bodies in a startling side-by-side image.

Smith’s post reminds us that shapewear—as its name suggests—changes the shape of your body. That’s not necessarily a bad thing—if women are feeling empowered while wearing Spanx and taking flattering selfies, more power to them. But at the end of the day, we shouldn’t feel ashamed of our bodies when they look like the photo on the right. After all, every body is something to be proud of.