They're sisters, best friends, training partners, competitors and now Jessica and Noemie Fox are both Olympic canoe champions.
While all the talk before the start of the Paris Games was about Jessica winning a gold medal treble, her younger sister Noemie carved out her own piece of the limelight by winning the kayak cross title.
Father Richard, a 10-time world champion but now officially the least successful Olympian in the Fox family with mother Myriam a bronze medallist, said Noemie contemplated giving the sport away many times.
With an older sister like Jessica, the GOAT of canoe slalom, boasting three Olympic titles from her medal haul of six, Richard said he would have understood if Noemie had taken a different path.
"It's amazing she stuck it out, because she struggled," said Richard, working in Paris as a TV commentator.
"I was pretty good pretty early and my brother quit when he was 16 ... in a way she stuck it out longer than most.
"Until kayak cross it was, 'As long as Jess is around there's no place for me'."
With only one selection spot available at the Olympics until the introduction of the kayak cross in Paris, Noemie's role at the previous three Olympics has been spectator, volunteer and ground announcer.
But the introduction of the new event opened up the Games opportunity for Noemie and after eliminating Jessica in their four-paddler heat in Paris, she stormed through the rounds to win gold in Monday's final.
In Tokyo there were emotional scenes with Noemie embracing Jessica after she broke through for her first gold medal.
This time Jessica and Myriam both jumped into the whitewater rapids at the Vaires-sur-Marne Nautical Stadium to celebrate Noemie's shock win with her.
Noemie said Paris C1 and K1 champion Jessica, three years older at 30, had always been her biggest cheerleader.
She said after winning their heat that her sister told her to "take it all the way".
Noemie said she would look to defend her title in Los Angeles in four years time and again turn the attention her way, even if it was just for one day.
"There'll always be that shadow as she's the greatest of all time in our sport and that's something when I was starting out, it was really hard to deal with," said Noemie.
"I always thought that I didn't get the ingredients to do well in this sport but watching her win, it's just such a privilege and inspiration and it really fuelled me.
"It's always been hard with just one spot available for the Olympics, but when there were two she really helped me and invested so much into my own campaign and self-worth.
"I'm her biggest cheerleader, just like she's mine."
