The pair looked every inch the loved up couple on the red carpet, looking adoringly at one another while photographers snapped their picture.
Elizabeth, 48, looked electric in a bright blue Queenspark dress with embroidered detail and a pair of nude heels.
A snakeskin-print clutch bag completed her dazzling outfit.
Former cricketer Shane was matching in a dark blue shirt and jeans finished with a smart blazer.
The couple – who had reportedly had a temporary split in September – are clearly enjoying their getaway in Sydney.
Understandably too, as the pair are staying in the heart of Sydney with second-to-none vistas of the city's famous skyline including the Royal Opera House.
"Not a bad view to wake up to. Courtesy @shanewarne23" wrote Elizabeth on Twitter alongside a photograph with the view from the hotel, taken by Shane.
"And good morning Sydney.... Hope the forecast is wrong & the thunderstorms stay away !!!!" tweeted Shane next to the same picture.
The couple flew into Sydney from Europe on Thursday night. Their next stop is Shane's hometown of Melbourne, where they will no doubt spend time with the 44-year-old's family.
The reunion comes a month after the pair were spotted in London when Elizabeth was filming E! series The Royals.
While Shane has tweeted that their engagement is back on, Elizabeth opted not to wear her engagement ring at the event.