As the US Open unfolds in Queens, New York, all eyes are on Serena Williams, playing in what is likely the final tournament in her storied career.

But even as a packed, star-studded Arthur Ashe Stadium eagerly watched Serena play her first-round match against Danka Kovinic of Montenegro, the star of the show seemed to be her precocious four-year-old daughter, Alexis Olympia Ohanian Jr.

While Serena served the aces and swing volleys which have come to define her game and legacy, little Olympia served up looks in her mother’s player’s box.

The tot wore a custom-made Nike dress bedazzled with mini rhinestones, a replica of the one worn by Serena. The tennis ace’s diamond-encrusted look was inspired by figure-skating competition apparel and incorporated a six-layer skirt, referencing Serena’s six prior US Open titles, which began in 1999.

Olympia paired her glitzy frock with white beads in her hair, a nod to the iconic look her mom and her aunt, Venus Williams, sported when they made their professional debuts in the 1990s.

Serena took a moment after her win to greet her husband, Alexis Ohanian, and Olympia. “It was either her wear beads or me,” Serena said at a news conference after her win.

“I wanted to do it but I just didn’t have the time,” she added, saying that Olympia often asks to wear beads.

“I was so happy when she had them on; it’s perfect on her.”