Madeline Holtznagel recently marked her thirtieth birthday with an elaborate Western-themed celebration on the picturesque South Coast, bringing together a host of socialites and close friends for a memorable weekend. The festivities, which kicked off on a Friday night, saw guests descending upon Narooma Beach to partake in the joyous occasion held at The Whale, an exclusive venue known for its scenic views and elegant ambiance. This grand celebration underscored Holtznagel's penchant for lavish parties, creating an unforgettable experience for all attendees.
The star-studded guest list included Madeline's sister, Simone Holtznagel, a well-known model, and Bernadette Sukkar, a prominent figure in the Pilates community, among other glamorous personalities. The initial stages of the celebration involved a more private gathering, allowing Madeline to cherish moments with her immediate family and dearest companions before the larger contingent of guests arrived. This intimate beginning set a personal tone for the weekend, emphasizing the close bonds shared with her inner circle.
Madeline commenced her birthday morning with a leisurely breakfast featuring fresh strawberries and other delightful treats, all while enjoying the serene ocean vista. She shared a charming photograph of herself in pink, lacy sleepwear, accessorized with a matching cowboy hat, perfectly capturing the theme of her party. In the background, a festive banner bearing "Happy Birthday" and a large "30" balloon added to the celebratory atmosphere. Later in the day, she embraced the beach environment, changing into a pink checkered bikini and a straw cowboy hat to bask in the sun with her friends. She also engaged in a workout session with her friend Simone Kaiser, sporting a blue athleisure outfit paired with her signature pink cowboy hat, demonstrating her commitment to an active lifestyle even during her special weekend.
As evening approached, Madeline transitioned from casual beachwear to a stunning $3,201 designer dress by Annie's Ibiza for a sophisticated dinner with her loved ones. Many of her guests enthusiastically shared glimpses of the celebrations on Instagram, showcasing their journey to Narooma Beach for the weekend. Simone Holtznagel, for instance, posted a picture of herself in a white cowboy hat, holding the Western-themed invitation. Other notable attendees included Julia Cavanagh, Caroline Tran, Sammy Bate, Sophie Brennan, and Tarah Jane Scott, all contributing to the vibrant social tapestry of the event. Even Pip Edwards' former partner, Joshua Clapp, was seen in photos alongside Simone, adding to the allure of the gathering.
Madeline's long-term partner, billionaire Merivale heir Justin Hemmes, was also present, fueling ongoing engagement speculations that have circulated since the couple's appearance at the Royal Hospital for Women Foundation Ladies Luncheon Committee in September. At this event, Madeline was seen sporting a prominent diamond ring on her left hand, drawing considerable attention and prompting observers to describe the jewelry as "dazzling." Further solidifying these rumors, Madeline was photographed wearing a diamond ring outside the waterfront mansion she shares with Justin in June, subtly confirming their potential engagement. Despite their efforts to maintain privacy, particularly regarding their relationship since 2019, these public sightings have consistently sparked interest.
The couple's family life expanded in June 2025 with the arrival of their son, Jaeger Justin Hemmes, an announcement Madeline shared on Instagram with a series of heartwarming photos. In an interview with Stellar magazine, she expressed her excitement about this new chapter, revealing that she had initially anticipated having a boy. She noted that while Justin already has two daughters, Alexa and Saachi, the birth of a son would offer a unique and shared parenting experience. Madeline also mentioned her preference for keeping her pregnancy private, only sharing details closer to term due to her public profile. Her sister, Simone, also became a mother in March 2024 to a daughter named Gia, further expanding the family. Justin also shares his two daughters with his ex-partner, Kate Fowler.
