Lara also shared a couple of photos of her frock to her personal Instagram account from a side and front on profile.
"Last night for @davidjonesstore #DJsAW21," she simply captioned the snaps.
Fans flooded the comments section with compliments, praising Lara for her glamorous look.
"You’re a vision! As always. Amazing Lara," remarked one.
"Love this dress on you," penned another.
Even former Married At First Sight groom Ivan Sarakula couldn't resist weighing in and commented: "Wep."
The red carpet event comes just two months after Lara and her family arrived back in Australia from Los Angeles.
Mum-of-three Lara, who shares Rocket, 5, and Racer, 4, and an 11-month-old son (whose name they are yet to reveal) with actor husband Sam Worthington, was spotted in February enjoying a meal out with girlfriends and her brother Joshua Bingle, 36, at upmarket eatery Sean’s in her old Sydney stomping ground of Bondi.
The family left the US after actor Sam landed the lead role in the Sydney Theatre Company’s production of dark comedy Appropriate.
“We travel everywhere together and we never have more than two weeks apart from each other – and that really works for us,” Lara has previously revealed.
Lara and Sam listed their Hollywood home for $12.5 million in October last year and, according to a report in the Sydney Morning Herald, enrolled their two eldest sons into a private school in Sydney – where classmates include Natalie Portman and Isla Fisher’s respective children.
“I always love coming back to Sydney,” Lara previously shared with Vogue Australia in 2019.