The 55-year-old appeared in good spirits as she turned heads in the show-stopping emerald green gown.
With a large bow at the waist, the outfit also featured trousers beneath the dress.
Shaynna took to Instagram to share the details of her outfit. 'Strapless sculptural pantsuit with train created with bespoke metallic woven French jacquard in jade green with matching purse (sic),' she wrote.
The dress was created by Sydney based designer designer Ziolkowski while her shoes were designed by Sophia Webster.
Days prior, Shaynna took home the AACTA Subscription Television Award for Best Female Presenter.