11/05/2013 at 10:00 AM EST
has a clear dress code for work: sleek and sexy.
The newly engaged reality star
, who made waves with a revealing swimsuit selfie
last month, is once again flaunting her trim post-baby body, posting a photo on Instagram Monday
that showed her busy at a photo shoot.
And what a day at the office it was: In the pic, which she captioned "Work day," Kanye West
's fiancée wears a sheer, midriff-baring ensemble that highlights her ample curves while drawing attention to her trim waist.
Kim has been working hard at her new figure: The new mom, who recently told PEOPLE
that her pregnancy was "a lot tougher than people saw on my show or from magazines," has been on a strict Atkins-based diet and workout regimen. It's clearly working: So far, she's already shed 50 pounds
of baby weight.
But she wasn't the only Kardashian perking up Instagram on Monday.
Amid her current martial woes
, sister Khloé Kardashian Odom
uploaded a snapshot that literally showed her leaning on someone for support: younger sis Kylie Jenner.
"If only I could give you this sunset," "Khloé wrote in the caption.