The process of deciding on an outfit for the Oscars normally begins months in advance of the highly anticipated Hollywood awards ceremony.
But if any nominated actresses have left their outfits for Sunday's ceremony to the last minute, they may wish to take note of this advice.
Fashion experts at Cosmopolitan claim to have calculated the winning formula for what hopefuls should wear to be in with the best chance of winning an Academy Award.
Charles Manning, style director at the magazine, analysed the dresses of the past 30 years of female Oscar winners to work out the common features of their outfits.
Taking into account ten different aspects of style - including color, neckline and train - he said the luckiest dress would have 'a shiny or sparkly opaque black sheath dress with a train, worn without a belt or a wrap'.
In case nominees do not have time to find a dress with all the key characteristics, he identified a dress from the spring 2015 Armani Privé couture collection that would fit the bill.
他从Armani Privé 2015春季时装系列中选出了一条符合要求的礼服，以防提名者没有时间去找一件拥有所有关键特征的裙子。
Black was found to be the most popular dress color or shade. It was worn by around a third of Best Actress and Best Supporting Actress winners - including Julia Roberts when she was awarded best actress for Erin Brockovich in 2001.
The sheath won the battle for best silhouette after it was worn by 60 percent of winning women.
The V-neck, as modeled by Reese Witherspoon in vintage Chanel in 2006, was found to be the most common neckline.
Winning actresses historically go for bare arms in sleeveless dresses such as Lupita Nyong’o's 2014 Prada outfit, while favorite fabrics were either shiny or sparkly.
Although the analysis noted that sheer has been a consistent trend over the last few years - not when it comes to Oscar-winning dresses.
Only 18 percent of winners - including Cher in 1988 - went for sheer with most opting for opaque gowns.
When it comes to a train, actresses were split almost down the middle: 53 percent, including Renee Zellweger in 2004, went for one, while 47 percent followed Anne Hathaway's lead by going without.
Brie Larsen wore a belt with her Gucci dress at last year's Oscars but the research claims that generally Oscar-winning actresses do not. Only 15 percent of winners have worn one.
Embellishment also divided actresses in half - with winners split 50-50 - while wraps were shunned by the vast majority of winners.
Source: 董静 & Yaning from language.chinadaily.com.cn