Williams told the crowd in her on-court interview afterward that it "kind of broke my spirit" to not have a proper farewell with Olympia, who turns 1 on Saturday.
Responding to a reporter who asked if there would be any birthday celebrations for her daughter, the 36-year-old had this to say: "Olympia doesn't celebrate birthdays".
The six-time champion at the U.S. Open missed it a year ago because she gave birth during the tournament.
On Monday night, the 23-time Grand Slam champion dominated in her first US Open match against Poland's Magda Linette wearing an asymmetrical Virgil Abloh x Nike tutu paired with sparkly silver sneakers from the same "Queen" collection and compression fishnet tights.
First, there was controversy over the black Nike catsuit Williams wore at Roland Garros, which prompted officials to introduce a dress code for the first time in Paris next year.
Williams came into this week in what amounts to a real slump for her, with losses in three of her past four matches.
What’s in Trump’s proposed trade deal with Mexico?
Speaking from the White House Monday morning, President Trump announced a reboot of NAFTA after weeks of negotiations with Mexico. However, his transition team has been taking part in the talks, and gave their blessing to the two-way deal.
I believe it was Lil' Kim who once said, "No matter what people say, we got it going on".
In response to the decision, Williams said: "I feel like if and when they know that some things are for health reasons, then there's no way that they wouldn't be OK with it". He posted a photo of her on the court and said, "Willing to design dresses for her for life".
The American showed no hesitation storming through the second set and finishing off her opponent with a thundering ace. Even Minaj, whose new album is titled Queen, took to Instagram to give all praise to Williams.
There's no risk of that happening at this week's U.S Open in NY, where she's dressing to impress.
She said: "I felt so feminine in the tutu, which is probably my favourite part of it".