Dear Meganjayne0011,As mentioned by other respondents, there are essentially 3 components involved with jaw angle width, the jaw bone, the chewing muscle and the salivary gland. Actually, all 3 of these structures can be addressed depending on whether they are pathologic or normal variants, and the extent of their contribution to the jaw structure. This would require an examination, possible Xrays and maybe even a CT scan or MRI scan. Start with an American Board of Plastic Surgery board certified plastic surgeon, preferably one with craniofacial fellowship training, or at least familiarity with craniofacial techniques. He/she will determine which of the structures is contributing to your jawline and how to best address each. Good luck!