Sunglasses are a must during the bright summer months at the beach and pool, and finding the right pair can be tricky. No matter what the current styles, stick with these recommendations based on your face shape and you can’t go wrong.

The best way to find your face shape is to pull wet hair back after a shower and look straight into a mirror. With your hair back, glasses off, and no makeup, you can see your full beauty and facial structure.

Oh, and the same general rules apply to regular glasses, as well!

Face Shape: Oval/Oblong – face is longer than it is wide

Try: Anything goes for this “ideal” face shape

Avoid: Glasses that are too big for your features

Famous Oval Faces: Jennifer Aniston, Halle Berry, Cindy Crawford

Jennifer Aniston wearing Ray-Ban Aviators $99

Face Shape: Square/Rectangular – strong jaw line, pronounced cheekbones, straight chin

Try: Round frames to balance hard angles and gradient lenses (dark at top, lighter on the bottom) to downplay jawlines

Avoid: Square shapes that accentuate hard angles

Famous Square Faces: Sandra Bullock, Demi Moore, Cameron Diaz, Gwyneth Paltrow

Sandra Bullock in sunglasses similar to these Square Aviators from Urban Outfitters $14

Face Shape: Round – face is as wide as it is long, full cheeks, rounded chin

Try: Strong lines and wide frames

Avoid: Round frames that mimic the lines of the face

Famous Round Faces: Drew Barrymore, Kate Winslet, Kirstin Dunst

Drew Barrymore wearing Oliver Peoples Rees $280

Face Shape: Heart – broad forehead which narrows to a small chin

Try:Round or cat’s-eye to balance chin

Avoid: Top-heavy styles that draw attention to forehead

Famous Heart Faces: Reese Witherspoon, Ashley Judd, Jennifer Love Hewitt

Reese Witherspoon in sunglasses similar to these Club Monaco sunglasses $49.97

Face Shape: Triangular – reverse of heart-shape with dominant jaw line and narrowing cheeks

Try: Bold frames that are widest at the temple and have a strong top line

Avoid: Small or narrow frames

Famous Triangular Faces: Victoria Beckham, Kathy Ireland

Victoria Beckham in sunglasses similar to these Adi Designs Sunglasses from Target $16.99

Face Shape: Diamond – high cheekbones and a narrow forehead and chin

Try: Oval frames to soften contours

Avoid: Frames that are wider than cheekbones

Famous Diamond Faces: Rihanna, Linda Evangelista, Katherine Hepburn

Rhianna in sunglasses similar to these Oversized Frames from Sunglass Warehouse $11.01