Last month, the 59-year-old mother-of-two sent fans into overdrive when she shared a gushing snap of the former couple laughing at the Royal Ascot alongside their eldest daughter Beatrice at Royal Ascot on Friday, captioning: 'Great day with my family.'
Fans flocked to the post, calling for the two to get back together.
'Just get remarried already,' one royal fan advised.
'I love these two - why don’t they get remarried ❤️❤️,' another added.
Sarah and Andrew separated in 1992 after just six years of marriage and divorced four years later.
A body language expert also commented on the overly friendly demeanor of the former flames.
Robin Kermode, a body language expert and communication coach, told Daily Mail: 'It's a real shared moment of fun.
'Prince Andrew’s comment has brought pearls of laughter from both women. Both are clearly relaxed and happy.'