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She completed her look with a black handbag with chain detailing and a matching face mask.
Following close behind was Big Brother 2021 winner Marley Biyendolo, 27, who turned heads in a snazzy yellow suit.
Chic: Sonia wrapped up from the cold in a chic coat, loose trousers and a pair of military-inspired platform boots
The basketball player completed his statement-making look with a white turtleneck jumper and black-and-yellow Nike sneakers.
Clearly in good spirits after taking home the $250,000 cash prize, Marley was seen merrily chatting to crew members as he made his way through the compound.
At times, he covered his mouth and nose with a black face mask.
The Sydney account manager, 31, had been rushing to catch the bus on his way to work as a chef at Tetsuya s in August 2019 when he received a text message from sister Ellana.