Craig Barritt/Getty; Roy Rochlin/Getty Meghan Markle is interviewing Tina Knowles for a special bonus episode of her podcast,Confessions of a Female Founder The fashion designer and iconic "matriarch" will open up to the Duchess of Sussex about raising her famous daughters, Beyoncé and Solange, and finding success on her own terms Knowles' memoir,Matriarch, is available now Surprise!Meghan Markle's podcast,Confessions of a Female Founder, hasn't wrapped its first season just yet. Lemonada Media, which produces the Duchess of Sussex's podcast, revealed on Thursday, May 29, that a bonus episode will be released next week. "We had just wrappedConfessions of a Female Founderand packed up the mics — until a call came in that we couldn't ignore. On the line was one of the most influential and inspiring matriarchs in culture today. Naturally, we hit record," they shared in a social media post announcing the news. Meghan's voice also appeared in the promo. She said, "Next week, we've got one more very special interview for you. A bonus episode. Because when a matriarch calls, and whenthismatriarch calls, oh, you answer." Meghan and Lemonada kept the guest's identity a secret, but the second most fans heard the iconic voice, they knew exactly who was on the line:Tina Knowles. In a brief clip from her appearance, Knowles opens up to Meghan about why she "fights so hard" for her famous family, which, of course, includes daughtersBeyoncéandSolange, as well as her four grandchildren. "I tell them every day, since they were little girls, 'You belong anywhere you choose to be,' " she shared of her advice seemingly to her daughters, who both found fame early in life and have flourished into massively successful artists, as well as mothers in their own right. It's no mistake that the Duchess of Sussex introduces Knowles as an iconic "matriarch." It's the title of the 71-year-old fashion designer'srecent memoir, which tells her life story in her own words. Knowlesopened up to PEOPLEabout writing the book last month, admitting she was initially hesitant "because I thought [people] only want to know all my kids' business. They're not going to be interested in me." "I've lived this incredible life," she continued, "and you really don't realize it until you start writing everything down." Originally, the book was going to focus more on Knowles' life in the spotlight, from designing costumes forDestiny's Childto helping shepherd her children through the entertainment industry. But through her creative process, a deeper, more detailed story began to take shape. "When I started telling the story and listening back to what I had recorded, I was like, it's time to do a memoir, because I want to leave that legacy for my kids," she shared. "But I also want to encourage young people and older people to go and record their parents and get those stories." Meghan's connection with Knowles and her famous family goes back many years. The Duchess and Beyoncé have frequently expressed their mutual admiration for one another, meeting at theLion Kingpremiere in July 2019, where the music icondubbed Meghan "my princess." Niklas Halle'n-WPA Pool/Getty Can't get enough of PEOPLE's Royals coverage?Sign up for our free Royals newsletterto get the latest updates on Kate Middleton, Meghan Markle and more! Since then, they've shared parenting tips, birthday wishes and encouraging messages. Beyoncé evenmessaged Meghan to check inafter she and husband Prince Harry sat down for theirlife-changing interviewwith Oprah Winfrey in March 2021. "I still can't believe she knows who I am," Meghan marveled on the couple's Netflix series,Harry & Meghan. The love continues to this day. Harry and Meghan recently left their kids –Prince Archie, 6, andPrincess Lilibet, 3 – at home to spend a "date night" out attending Beyoncé's Cowboy Carter tour at SoFi Stadium in Los Angeles. Meghan shared cute PDA pics from their night out on Instagram, including her borrowing a brimmed hat from her husband and the pair cozied up together for the epic spectacle of a show. Meghan, Duchess of Sussex/Instagram "About last night…." Meghan captioned her pics. "Thank you @beyonce and team for an amazing concert (and a very fun date night)! All love." Read the original article onPeople