Will loosing body fat reduce my chubby cheeks and give me more prominent cheekbones?

Your face likely will slim to some degree with weight loss. Once you've reached a stable weight that you're happy with you can assess the shape of your face. If you're not happy with the shape there are both surgical and non-surgical options that are very effective for facial shaping. I hope this information is helpful.Stephen Weber MD, FACSDenver Facial Plastic Surgeon

Volume and contouring of the cheeks can be created with well-placed fillers (Voluma, Radiesse, Bellafill, Contour) and Sculptra. Implants or fat are alternatives. Botox and radiofrequency can help slim and contour the jawline. Liposuction can help slim the face. Ultherapy, J Plasma and rf treatments can provide skin tightening and lift. I recommend getting a formal evaluation with a facial sculpting expert. Best, Dr. Emer

In most cases, when someone loses body fat, there is a decrease in facial fat as well.  Since you are in the process of losing some fat now, I would see how your cheeks look after you get to your goal of 9% body fat and then reassess the situation.