Warm lowlights add dimension to McAdams' icy blonde hair.

Cunningham took the red-haired starlet to a bright, white shade of blonde. (Side note: Stone and Swift are totally #twinning.)

Christina Aguilera proves that a blunt haircut looks especially chic with monochromatic platinum color.

Queen Bey posted this selfie with superpretty bright blonde ends on her Instagram. No caption was needed to get over a million likes.

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Colorist Kristen Ess gave the dark-haired "Pretty Little Liars" star a blonde makeover, and we're obsessed with these platinum highlights.