In order to round out the first week of 2018, the soon-to-be mother-of-three just shared a nearly nude photo of herself — and dressed in nothing but a white thong, it may just be one of her most naked shots ever

“Rise & Grind,” Kardashian captioned the photo, which captures the 37-year-old star laying on her side on a bed, with her hand covering her chest, her legs tucked up, her thong revealing her bare butt, and her long brown hair strewn across the pillow