Naturally, fans went wild for her enviable figure.
"Wow... if only!!! My wish for Christmas... a body like hers," one fan daydreamed.
"SLAYcation!!" exclaimed another.
"That moment your jaw hits the floor," a third stated.
So what's Sonia's secret?
In a chat with the Australian Women's Weekly, the TV personality revealed that she swears by Strictly You - her dance-based fitness and nutritional program.
"This is actually half the reason I did this, because people were sort of saying to me 'What do you do? What do you eat? What workout do you do? How do you get your arms to look like that?" she told the publication in 2019.
"Even now, if I post a picture on Instagram from The Voice I get so many questions from people about what I'm doing, what am I eating, what sort of workouts do you do, so it felt like a natural step to do this and to share it."
In 2021, Sonia is set to dominate Channel Seven as she'll be hosting ratings giants Big Brother, The Voice and new mini-golf reality show, Holey Moley.
"Thank you 2020, next! 2021 is shaping up to be a big one. Bring it on!" she teased on Instagram back in October.
The TV personality also shared her excitement when the new Voice coaches were announced on Instagram.
"PLEASE WELCOME OUR SUPERSTAR COACHES! @ritaora @jessicamauboy1 @keithurban @guysebastian," she penned.
