[Amira]

Oval This is the most versatile face. Many different styles will work for you, but no matter the length of your cut, you'll look best with layers near your cheekbones, lips or chin -- basically whatever feature you want to highlight.
Avoid: Short layers that add heighth on top of your head. This will make your face appear long. If your hair is thick or curly, avoid a blunt cut. You'll look like a pyramid.
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Long For straight hair, you can create more width with bangs. Chin-length bobs and cuts are also ideal for you because they create the illusion of width. Curls & waves also add width, but avoid short layers that add volume on top.
Avoid:Stay away from extremely long or short cuts. These elongate your face.
Round Your best bet are styles that fall right below your chin. Also, layers from the top down remove bulk and weight from the sides. Go for wispy and tapered ends. These de-emphasize the roundness of your face.
Avoid: One-length, blunt cuts if you have short hair. These only emphasize your round face.

Square What looks best on you: face-framing layers, but short, spiky cuts look great also, as do long, sleek styles with layers that start at the jawline & continue downward.
Avoid: One-length bobs (especially chin-length) and blunt-cut bangs. These will make your face look even more square.

Heart Your eyes & cheekbones tend to be the focal points of your face so you'll want to draw attention to these features by keeping your top layers soft & long if you have short hair. Side-swept bangs can have the same effect. If you have long hair, go for long, wavy layers that graze your cheekbones. This will downplay a pointed chin.
Avoid: Blunt-cut bangs and harsh, choppy layers.