Kim Kardashian is reveling in her new body and is clearly telling the haters: I’m back!

After months of being called fat and overweight during her pregnancy, Kanye’s fiance is basking in the glory of getting her pre-baby body back and getting back to what she does best: building her brand.

The newly engaged reality star, who dropped jaws with an uber sexy swimsuit selfie last month, is once again flaunting her svelte post-baby body, posting a photo on Instagram Monday that showed her posing at a photo shoot.

In the pic, which she captioned “Work day,” the new mom wears a sheer, midriff-baring ensemble that highlights her ample curves while drawing attention to her trim waist. Go Kim!