The 2-year-old cutie rocked the runway with Williams on Tuesday, wearing a black top and colorful shoes, and with her hair piled into a high pony.
The tennis star was showcasing the Spring/Summer 2020 collection of her fashion line, Serena, at Metropolitan West in New York City.
The event marked the second runway show for the label.
Sitting in the front row was Kim Kardashian West, who attended with her pal, Lala Anthony. Gayle King and Ashley Graham were also reportedly in the audience.
Williams’ family fun came days after she was defeated by Canadian Bianca Andreescu at the U.S. Open while being cheered on by celebrities like Meghan Markle, Priyanka Chopra Jonas, Natasha Bedingfield and Gigi Hadid.
While the loss came as a shock to some, Williams still has her “greatest achievement” — her daughter, whom she welcomed with husband Alexis Ohanian in 2017.
She recently took to social media to gush about how fulfilling motherhood has been.
“The last two years have been my greatest accomplishment,” she said while marking the little girl’s second birthday.