Madeline Holtznagel was seen wearing a striking diamond ring on her left hand while attending a luncheon in Sydney with her boyfriend, billionaire pub baron Justin Hemmes. The couple attended the 2026 Ladies Luncheon Committee for the Royal Hospital for Women Foundation at Mimi's in Coogee on Thursday.
Holtznagel, a former makeup artist, draped her arm around Hemmes, making the large diamond ring a focal point. The jewelry sparked engagement rumors, with one observer describing the ring as 'dazzling'. Holtznagel, 29, previously fueled such speculation in June when she was photographed wearing a large diamond ring outside the Sydney home she shares with Hemmes, 53.
The couple, who have been together since 2019, generally maintain a private relationship. In June 2025, Holtznagel announced the birth of their son, Jaeger Justin Hemmes, via Instagram.
She shared with Stellar magazine that she had always anticipated being a mother to a boy, noting that Hemmes already has two daughters, Alexa, nine, and Saachi, seven, with his ex-partner Kate Fowler. Holtznagel expressed that having a son marked a new journey for them as a couple, referring to their son as Hemmes' 'little best mate.'
Holtznagel also commented on her decision to keep aspects of her pregnancy private, stating that while she usually keeps her life out of the spotlight, she felt ready to share photos as her pregnancy progressed. Holtznagel is the younger sister of model Simone Holtznagel, who welcomed a daughter in March 2024.