The flight attendant, who represented the French Caribbean island of Martinique in the contest, said she hoped her victory would inspire others to pursue their dreams.
The pageant, which has been running since 1920, previously stopped women over the age of 24 from entering, with a rule change in 2022 also opening it up to mothers and married women as organisers said they wanted to 'change with the times'.
Miss France has crowned its oldest ever champion after more than 100 years of strict age limit rules.
A 52-year-old woman also entered the contest this year but did not make it past the regional stages, French media reports.
Angélique Angarni-Filopon declared her win - at the age of 34 - as proof that it is 'never too late' to change your life or career.
