The 37-year-old reality star shared a photo of herself on her Instagram Story on Sunday wearing a sparkling white sequinned jumpsuit with a plunging cowl neck and a veil.
She styled her blonde hair in loose curls and accessorised with silver drop earrings and a large diamond ring on her ring finger.
While the look unsurprisingly caught people’s attention she ventured out of her hotel in Sydney, Eliza explained that her bridal attire was simply a costume for a themed party.
“I was a tacky bride at a Vegas party last night,” she captioned the snap. “Everyone on the street, ‘Congrats, you’re FINALLY getting married’ 😑”
Eliza was one of the many famous faces attending Zoë Foster Blake and Hamish Blake's Las Vegas-themed holiday soirée on Saturday night.
Before going on The Block, Eliza was employed as Hamish and Andy Lee’s personal assistant for 10 years.
She told New Idea that she became close friends with the pair working with them on their radio show and various TV projects, but worked mostly with Andy once Hamish moved to Sydney in 2021.
Hamish and Zoë's Vegas-themed party
Hamish and Zoë went all out for their Vegas-themed bash, transforming their house into a casino complete with personalised cash featuring their faces.
Zoë donned a Cher-inspired ensemble, while Hamish and his friend Ryan Shelton went as Vegas performers Siegfried Fischbacher and Roy Horn. Nova host Michael ‘Wippa’ Wipfli and his colleague Tom Ivey also dressed as the pair’s “big sweaty tigers” in furry white outfits.
Meanwhile, other guests dressed as Las Vegas icons Elvis and Priscilla Presley, Elton John, Celine Dion, Daft Punk, Travis Barker, David Copperfield, Evel Knievel and Zach Galifianakis’ character Alan from The Hangover.
There were also plenty of showgirls, boxers, musicians, tourists, cowboys and other brides in attendance.
“Grownups don’t get to play enough. THAT is why we do themes,” Zoë wrote on Instagram.
Never miss a thing. Sign up to Yahoo Lifestyle’s daily newsletter.
Or if you have a story idea, email us at firstname.lastname@example.org.