Look in the mirror with hair pulled back. If your forehead and jaw are similar in width and your jawline has visible, defined corners rather than a gradual curve, you have a square face.
Square faces can go two directions: lean into the bold angular structure, or soften it with curves and texture. Both approaches work — choose based on your aesthetic.
Round or oval frames create beautiful contrast with sharp square geometry — the softer the frame, the more it balances a strong jaw.
Round and oval frames create the ideal contrast with sharp square jaw angles. The rounder the better.