Choosing eyewear for a rectangle face comes down to one question: does the frame's shape work with or against the face's existing lines? Also called oblong, this shape shares the square's consistent width from forehead to jaw but stretches significantly longer, often with a tall forehead and elongated cheeks. The jaw can be squared or slightly rounded, but the defining trait is verticality rather than angularity. Cat-Eye Frames — upswept outer corners that angle up toward the temples. — interacts with that geometry in a specific, predictable way.
The Visual Effect
The visual effect: Lifts the outer eye line and adds width at the upper face. On a rectangle face, where tall, straight-sided, a major contributor to the face's overall length and squared or gently rounded, similar in width to the forehead, this effect either corrects an imbalance or reinforces the face's existing character, depending on which measurement the frame emphasizes.
Why This Pairing Works
Why this pairing makes sense: Introduce visual width and interrupt the vertical line — horizontal volume at the sides, fringe or bangs that shorten the forehead, and frames or hairlines with a strong horizontal emphasis all work against excess length rather than adding to it. Frames that are faces that are narrower at the top and benefit from upper-face width are the ones worth trying first on a rectangle face; frames that are faces already wide at the forehead or temples are worth trying on, but expect a less flattering result without careful sizing.
Sizing It Correctly
Sizing it correctly: The frame width should roughly match your face's widest measurement — for a rectangle face that's the forehead or jaw area. Frames noticeably narrower than that measurement will look pinched; frames noticeably wider will overwhelm the face rather than balancing it.