According to Sun UK, Georgina, the shopkeeper-turned-model fuelled speculations that the pair are engaged after she showed off a sparkling ring in an Instagram video.
Cartier advertised a look-alike engagement ring and recently uploaded a picture of it on Instagram with the price tag of £615,000.
Georgina, who has 4.6 million followers on the social media site, commented with a string of heart emojis.
The pair have kept tight lips over a future wedding, even though they already have a daughter together.
The new ring comes just months after she gave birth to the couple’s first child, Alana Martina.
Georgina sat in the passenger seat of the ex-Manchester United ace’s luxury motor when she showed off the new rock.