I have a very square face and jawline, what procedure would make it look less square? (Photos)

Hello and thank you for your question.  The
best advice you can receive is from an in-person consultation.  If you have masseter hypertrophy, this can be improved with botox injection into the masseter, which can soften the angle of your jaw.   Make sure you specifically look
at before and after pictures of real patients who have had this surgery
performed by your surgeon and evaluate their results.   The most
important aspect is to find a surgeon you are comfortable with. I recommend
that you seek consultation with a qualified board-certified plastic surgeon who
can evaluate you in person.
Best wishes and good luck.
Richard G. Reish, M.D.  FACS
Harvard-trained plastic surgeon

Thank you for your question and posting appropriate pictures. You seem to be a very good candidate for Botox injections in the masseter muscle which will relax this muscle make it appear less angular who it is a procedure that would be required once to twice per year.