Four months after giving birth to twins Rumi and Sir, Beyonce is showing off her toned mid-section in a photo shoot that she shared on Instagram.

Beyonce / Instagram

The 36 year old posted photos of herself posing in the same outfit: a white, off-the-shoulder crop top, a tan corset and black pants. She accessorized with a small, pink bag, gold necklaces and black stilettos.

She shared two images and a video, which shows the superstar posed in many different positions and dancing to the song "Magnolia" by Playboi Carti.

Beyonce has posted full-body shots in very fitted clothing since the twins were born, but this is the first time she has showed off her midriff.

The mom of three stayed very active during pregnancy, working out at SoulCycle -- often with husband JAY-Z or pal Kelly Rowland -- numerous times throughout it and again shortly after giving birth.

"I can't eat what I want, and I can't not go to the gym," Beyoncé told Self of how she stays fit. "The truth is it's a lot of sacrifice. It's more about your mental strength than physical strength. You have to push yourself. It doesn't matter what trainer you have. And it doesn't matter what program you're on. You have to be healthy and make the right choices."