It takes more than a winning dress to scoop an Oscar, but we’ve analysed the characteristics of outfits from 1929 onwards to find the “perfect” Best Actress gown.

Features such a fit, colour, neckline and sleeve-length were assessed, suggesting that a gown like Joan Fontaine’s number in 1941 is the most likely to steal the prize.

Joan Fontaine reacts as she wins the best actress award at the 1941 annual Academy Awards presentations in Los Angeles
(AP)

Some actresses who won the Oscar did not attend the awards, while others donned jumpsuits, and so these have not been taken into account.

A graphic showing Oscar the statistics of former Oscar dresses
PA

But some dresses over the years have fallen far short of this rule…

Cher shows off both her Oscar and Bob Mackie black-sequined gown after winning the award for best actress for her role as the superstitious young widow of "Moonstruck" at the 60th Annual Academy Awards
(Lennox McLendon/AP)

Cher donned this barely-there Bob Mackie black-sequinned gown when she picked up the Oscar for her role as the superstitious young widow of “Moonstruck” in 1988. Risqué.

Loretta Young looks at her Oscar at the 1947 Academy Awards held at the Shrine Civic Auditorium in Los Angeles
(AP)

The photo hardly does the dress justice: this bright green number was worn by Loretta Young at the 1947 Academy Awards.

Actress Halle Berry waves as she arrives for the 74th annual Academy Awards on Sunday, March 24, 2002, in Los Angeles. Berry is nominated for Best Actress for her role in "Monster's Ball." Berry is wearing a gown designed by Elie Saab. (AP Photo/Laura Rauch)
(Laura Rauch/AP)

And who can forget Halle Berry’s bold dress when she scooped the prize for her role in Monster’s Ball in 2002?

Actress Diane Keaton poses with her Oscar statuette at the 50th Annual Academy Awards in Los Angeles
(AP)

Diane Keaton opted for a less glamorous blazer, shirt and pleated skirt when she picked up the award in 1978.