Perth - A jubilant Kristina Mladenovic and Caroline Garcia led France to its first Fed Cup title since 2003 on Sunday, winning a deciding doubles rubber to crush Australian dreams 3-2.
Mladenovic and Garcia, who won the 2016 French Open doubles title, bounced back from going an early break down in the first set to expose Stosur's weaknesses, with the veteran out-of-sorts and making too many mistakes.
"For sure I am going to have a lot of beers now."
That will mean an end to home ties and the atmosphere they bring, with the 26,951 fans turning up over two days in Perth the second-highest Fed Cup attendance on record after Roland Garros (30,000) in 2005.
But captain Alica Molik kept faith with her and she bounced back to beat Parmentier 6-4, 7-5.
"From my point of view I fought as hard as I could and I hope that I did my team proud and all Australians proud. I fought with everything I had left," said Barty.
She held her nerve to serve out the set.