"Maybe [they will marry], they are very happy together," Christian revealed at the David Jones Spring Summer 2019 event.
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Christian revealed that he is very close to his father's new partner and he would welcome the union, telling the publication: "I love Virginia and me and my dad are best friends."
Christian Wilkins and Richard Wilkins arrive for the 30th Annual ARIA Awards 2016
Getty
Virginia and Richard, 65, first sparked engagement rumours in July after Richard posted a picture of his stunning blonde girlfriend outside a luxurious jewellery store in the romantic Italian island of Capri.
"You know you’re in trouble when they name the bloody store after her," Richard wrote on Instagram.
Richard and Virginia first went public with their relationship in October 2017, when they were spotted getting cosy at former Today co-host Lisa Wilkinson and husband Peter FitzSimons 25 year anniversary celebrations.
50-year-old Virginia Burmeister is the ex-wife of Morgan and Stanley investment banker Mark Burmeister and was a Bluebell dancer at Le Lido Paris in the '80s. Virginia has two children with Mark; Ciel and Blaise.
Milly HaddrickMilly is a journalist who passionately devours all the latest and juiciest news. A devout tea enthusiast who's a firm believer in quality downtime, Milly's weekends are usually spent relaxing with a big plate of food, a nice cuppa and the crossword.