Wearing a skin-tight black swimsuit that shows off her cleavage and itty-bitty waist, the mother-of-two looks skinnier than ever.
"Pre photo shoot fittings," the 35-year-old captioned the image.
The reality star previously opened up about losing 60 pounds after welcoming her son, Saint West, in December. She also has a three-year-old daughter, North, with her husband of two years, Kanye West.
"After having two kids, and being able to get in shape and still feel good about myself, I've never felt better. I worked my ass off, I've altered my life and I'm proud of that."
Keep up the good work! For more of her raciest Instagram moments, check out the gallery below!