It's An Illusion Crop by FP Movement at Free People,

It's no illusion that this workout crop looks this good. Made for high-intensity workouts, this high-impact style features a zip-front, cropped design with removable cups for added coverage, comfortable padded straps, and a breathable cutout back* Interior non-stretch cradle to minimize bounce* Soft and supportive elastic under band with sweat-wicking channels* Center front zip for easy on and off