Their third-round meeting here at Flushing Meadows now, will be their earliest meeting at a Major since taking on each other in the second round of the Australian Open in 1998.
Two-time champion Venus beat Italy's Camila Giorgi 6-4 7-5.
'It propels us to continue to play that for the tournament. "I'm pretty pumped to get through", added Venus, playing in her 80th Grand Slam event.
"Normally, I would say cheer for me".
"The more these incidents come out, that's a good thing", Asha Dahya, founder and editor of GirlTalkHQ, told ABC News.
"Obviously it's early in the tournament, so both of us are going to be looking forward to continuing to play better", Venus said before Serena took the court for her match.
The decision was branded sexist given male players regularly change shirts on court, and US Open organisers responded with a statement on Wednesday admitting Cornet should not have received any sanction. And winning in straight sets.
Serena wore this Virgil Abloh tutu during the first round of the US Open on Monday - just days after Bernard Giudicelli's interview made headlines.
During her post-victory news conference, which came long before Serena set foot on court against Witthoeft, Venus clearly had little interest in entertaining questions about the possible all-in-the-family match.
"You're beating it up now", the elder sister said.
Venus later joked that her younger sister had had an unfair advantage: "It was two against one", the older Williams said.
"Everything's fine, guys", she said. "So I think that's the toughest part for me, when you always want someone to win, to have to beat them". I'm always living in a fantasy world.
Azarenka, the 2012 and 2013 runner-up, made the third round for the first time in three years with a 6-1, 6-2 win against Australian 25th seed Daria Gavrilova. I feel like throughout our career, we have pushed each other to be the best that we can be, and be Venus and Serena Williams'. "I've been wearing trousers in general a lot when I play, so I can keep the blood circulation going".