Rectangular or Oblong (Kim sharma):

Your face is long and slender, about the same width at forehead and just below cheekbones. May have a very narrow chin or a very high forehead.

Have short to medium hair. Have side swept bangs like Kim. this will shorten the look of a long face.Layers work great.

Stay away from extremely short hair or hair styles with no bangs.Also stay away from center part

Oval Face(Aishwarya rai):
Your face is only slightly narrower at the jaw line than at the temples, with a gently rounded hairline. Most bollywood heroines fall into this category. You can carry any hair style, long short or medium. layers are in fashion now and will aslo look great on you.

Square Face(Kareena):
You have a strong, square jaw line and usually an equally square hairline.

Have a short to medium length hair line.Have layers to soften your prominent jaw.

Avoid short hair cuts ending at your jaw line. this will draw attention to your square jaw.

Heart Shaped(Amrita):
Your face is wide at the temples and hairline, narrowing to a small delicate chin.

You can try a chin length bob. this is great for your face.longer styles with layers also look good.Ca try bangs too.
Avoid pony tail or hair tied back.