Kylie Kelce apologized for referring to Kate Middleton as “Princess Kate” on her podcast.

“I love learning, so I was unaware that calling Princess Catherine, Princess Kate was offensive,” Kylie said on Thursday’s episode of her “Not Gonna Lie” podcast.

“I didn’t know that. Now I know that. Now I will proceed accordingly,” the mom of four continued. “I apologize for the mistake. I would like to refer to people in the most respectful way and how they feel respected.”

Kylie Kelce (seen here) apologized for calling Kate Middleton “Princess Kate” on her podcast. Not Gonna Lie with Kylie Kelce

Kelce said she “was unaware that calling Princess Catherine, Princess Kate was offensive” (Middleton is pictured here). Chris Jackson-Getty/POOL supplied by Splash News / SplashNews.com

Kylie, 34, then issued a direct apology to the future queen: “Princess Catherine or the Princess of Wales, I apologize. I will get that sorted immediately starting now.”

Middleton’s formal title has been Catherine, Princess of Wales, since September 2022, when Prince William became the Prince of Wales and his father, Charles, was named king following Queen Elizabeth II’s death.

Before that, Middleton, 44, was known as the Duchess of Cambridge after her and William’s wedding in 2011.

Kylie (seen here) added, “I apologize for the mistake. I would like to refer to people in the most respectful way and how they feel respected. Getty Images for HP Inc.

Kylie also gave a direct apology to Middleton (seen above) for misaddressing her, and promised she’ll “get that sorted immediately starting now.” Victoria Jones/Shutterstock

Kylie misaddressed Middleton when she invited the royal onto her podcast last week.

“Princess Kate, Duchess of Cambridge, if you ever wanted to come on and chitchat about some field hockey and maybe kids. I don’t know. We got a couple things in common,” Kylie said on the Sept. 24 episode of “Not Gonna Lie.”

Kylie also noted that their “husbands chitchatted on the other podcast,” referring to how William, 44, appeared on Jason and Travis Kelce’s “New Heights” podcast in July.

On Thursday’s “Not Gonna Lie” episode, Kylie read a comment from a listener who said Middleton “is too refined and beautiful to be subjected to [Kylie’s] cursing.”

“You’ll need to clean up your act,” the comment added, which Kylie said she agrees with.

Kylie (seen here with husband Jason) invited Middleton on her podcast so they could discuss that they both played field hockey, Middleton’s cancer, and more. kykelce/Instagram

Kylie also pointed out that Prince William appeared on Travis and Jason Kelce’s podcast in July (as seen above). New Heights

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Kylie then explained that she wants Middleton on her podcast so they can discuss that they both played field hockey, the royal’s cancer battle, and more.

“Do I think she has time to hop on this podcast? No, I do not,” Kylie admitted. “I don’t think that.”

Kylie also clarified that while she “loves curse words,” she’d never utter an expletive in front of Middleton.

“At the end of the day, I am respectful of the situations that I am put in, at least being respectful to the people I am speaking to,” Kylie said.

Additionally, Kylie promised that she wouldn’t curse in front of Middleton (pictured above). PA Images/INSTARimages

Kylie (seen here) said: “At the end of the day, I am respectful of the situations that I am put in, at least being respectful to the people I am speaking to.” Instagram/@kykelce

Kylie’s husband and brother-in-law famously met William and his kids Prince George, 13, and Princess Charlotte, 11, backstage at Taylor Swift’s Eras Tour show in London in June 2024.

After the concert, the “Opalite” singer, 36, snapped a selfie with the royal trio and Travis, 36.

Middleton did not attend the concert, which took place three months after she revealed her cancer diagnosis.