Phoebe Gates, the youngest daughter of tech billionaire Bill Gates, asks Kim Kardashian for fashion startup advice

"Girls, have I taught you nothing about media training? You can't just give them everything right now," Kim told Phoebe and Phia co-founder Sophia Kianni when the two disagreed over how much to share with the media ahead of the app’s launch.

Phoebe replied, "That is a great point, Kim. You’re the expert."

"Starting a company is no joke, so keep Phia under wraps until the perfect moment," the SKIMS co-founder said.

"Trust me, it'll be worth it," Kim added before ending the call. "I’ll call you girls later. We have a lot of work to do."

Phoebe Gates, the youngest daughter of Bill and Melinda French Gates. Photo courtesy of Phoebe's Instagram

The pair shared the exchange in an April Instagram post with the caption: "If @kimkardashian tells you to wait, you wait," as reported by People.

On April 24, Phoebe and her Stanford roommate Kianni officially launched Phia, an AI-powered shopping app described as a digital assistant for "smart girls, age 25 to 30, who want to shop like a genius and get the best price in one click."

The platform scans pricing data across more than 40,000 online retailers, recommends cheaper alternatives, and highlights secondhand options from platforms including The RealReal, Poshmark, and Vestiaire Collective, according to The Verge.

Phoebe raised US$850,000 in funding for Phia independently, according to New York Post. Among the early investors is Kardashian’s mother, Kris Jenner.

In addition to Phia, Phoebe and Kianni, 23, also co-host "The Burnouts," a podcast under Alexandra Cooper’s Unwell Network, Us Weekly reported.