There was once a hard and fast rule in fashion that wearing white before May Day was a no no. Yet rules are made to be broken, and many of our celebrities in white began wearing the traditional summer colour several weeks before it was officially considered in style.
Cindy Crawford (47), however, was on the right side of May Day when she stole the show at the premiere of The Great Gatsby at the Cannes Film Festival in a gorgeous white Roberto Cavalli gown that featured a jewelled plunging neckline.
Actress Isla Fisher (37) arrived at a celebrity photo call in Cannes in a cute white lace Dolce & Gabbana dress.
Ethiopian model Liya Kebede (35) attended the premiere of Jeune & Jolie in Cannes in an Alberta Ferretti Fall 2013 lace white gown with a chiffon-tiered skirt which was accented with a black-and-white waistband and simply styled with a black Repossi cuff and ring.
Law and Order: Special Victims Unit actress Mariska Hargitay (49) wore a white tight-fitting Victoria Beckham dress to the Joyful Heart Foundation Gala at Cipriani in New York City.
We can always count on Chloe Sevigny (38) to make things interesting. The star of Those Who Kill showed off her unique style at the A&E Upfronts in NYC by wearing a 1920s-inspired white Christopher Kane dress and black Balenciaga shoes.
Uber-model Karlie Kloss (20) wore a white Cushnie et Ochs cut-out dress to the MTV Awards, which she accessorised with white Gucci sandals and minimal hair and make-up.
Made in Chelsea's Millie Mackintosh (23) looked fab in a white snakeskin frock last month as she celebrated her engagement to rapper Professor Green. She styled her dress with vibrant red shoes and lippy, a cute clutch, gently tousled hair – and her giant engagement ring.
Actress Marion Cotillard (37) showed off her panache in a white Alexander McQueen 3D flower- embroidered dress and embellished pumps at the Immigrant photocall at the Cannes Film Festival.
Oscar nominee Jessica Chastain (36) was angelic in her white Givenchy by Riccardo Tisci gown at the Cleopatra cocktail party at Cannes.
Eva Longoria (38) looked her sophisticated self at the Salvatore Ferragamo L'Icona party in a fresh and summery white dress. British actress Tamsin Egerton (24) wore a white sheer dress at The Look of Love premiere in Soho, in which she co-stars with Steve Coogan and Anna Friel.
Irish model Maire Hughes (26) wore a stunning white blazer and trousers to the Andrea Roche Models Summer Party at Harry's on the Green in Stephen's Green Shopping Centre.
Some tips for wearing white include never wearing a white bra under a white shirt or dress if you don't want it to show. Instead, wear a nude-coloured bra.
Should you opt to wear white trousers, consider wearing the trousers in the size that is larger to your normal size. For example, if you usually wear a 10 in jeans, consider wearing a 12 in white jeans. You don't want tight jeans in light-coloured fabrics. It's also a good idea to wear nude-coloured underwear as well.
Choose a shade of white that suits your skin tone. Not everyone can wear bright, crisp white. However, there are shades of white for every skin type. For example, cool skin tones (with blue and pink undertones) work well with classically bright white (because it also has cool undertones) and paired with silver accessories.