How to buy sunglasses?

Right frame for your face shape: If we look at different celebrities and their choices, that might help you decide which ones are meant for your face type.

Round face: Usually equal in width and length forming a circular shape without prominent features. Men and women with this face cut should aim at rectangular or square frames like Wayfarer and Square to add dimension and structure.
Celebrities to watch out for - Priety Zinta

Square face: This shape has edgier angles. Square faces are usually equal in length and width but with evident cheekbones and jawlines. With this face cut, aim at drawing away the attention from your jawline and try softening your angles with curved, thin or barely there frames like oval and round frames.
Celebrities to watch out for - Sonam Kapoor, Kareena Kapoor Khan

Oval face: Rejoice! You are in luck because most sunglasses look great on you. You have the power to experiment with different styles, frames and colors of sunglasses like Clubmaster and Butterfly.
Celebrities to watch out for - Deepika Padukone, Priyanka Chopra

Heart Face: This face shape has a slightly wider cheek area with a larger forehead and a pointed chin. People with this face shape should aim at flattering your face with thinner, slightly curved sunglasses such as Cat Eye and Aviator.
Celebrity to watch out for - Sonakshi Sinha