Celebrities with heart-shaped faces: Halle Berry, Reese Witherspoon and Jennifer Love Hewitt.
A square frame will help even out the proportions of a heart-shaped face.
Celebrities with triangular faces: Jennifer Aniston, Renee Zellweger and Michelle Rodriguez.
Glasses with heavy raindrop-shaped frames, or rectangular glasses with sharp edges, work well with triangular faces.
Celebrities with rectangular faces: Sandra Bullock, Lucy Liu and Ted Danson.
Oval frames can help soften the sharp edges and straight lines of a rectangular face.
Celebrities with circular faces: Olivia Munn, Kelly Clarkson and Charlize Theron.
Aviators or Wayfarers will compliment circular faces nicely by highlighting their natural shape.
Celebrities with square faces: Rihanna, Natalie Portman and Lady Gaga.
People with square faces should avoid sharp edges and instead choose glasses with a slightly elongated frame.
Celebrities with square faces: Selma Hayek, Tina Fey and Jessica Alba.
If your face is oval-shaped, you're in luck. You can wear pretty much any sunglasses. Just make sure that they are at least as wide as your face.
Um, we don't know any celebrities with rhomboid faces, but if you do, please let us know.
Anyway, people with rhomboid faces should choose glasses where the lens' height is greater than its width.