Like make-up and clothes, hair is an essential part of any red carpet look, and one that never fails to spark commentary from style observers. In 2014, these celebrity do's are among those that left the strongest impression. Here is a review in pictures. (All Photos: AFP)| Beyonce: The famous singer caused quite a stir with her wavy blonde bob, seen here at the 56th Grammy Awards ceremony in Los Angeles. We think the hairstyle suits her to a T, but she quickly gave it up, perhaps in part due to mixed reviews from her fans.
Cara Delevingne: At the screening of "The Search" at the Cannes Film Festival, the British supermodel wore a glamorous down sideswept hairstyle that perfectly framed her face. It's a style she wears rather often, and one that gives her an (almost) angelic appearance.
Jennifer Lawrence: Formerly seen with long dark hair, for the most part, the actress transformed her look in 2014 with a short cut and rock 'n' roll blonde highlights. Here, she poses on the red carpet at the 86th Oscars ceremony in Hollywood.
Blake Lively: Always dressed to the nines, the actress looked especially stunning at the Cannes Film Festival opening ceremony. She chose one of the trendiest hairstyles of 2014: a high ponytail made to look slighty messy for a glamorous done/undone effect.
Marion Cotillard: Representing French elegance at the 2014 Costume Institute Gala in New York, the actress wore a retro sideswept twist. The perfect hairstyle to frame her lovely face and draw attention to her scarlet lips.