Prince Harry makes first public appearance with Meghan Markle's mum in Toronto

Prince Harry and girlfriend Meghan Markle have taken another big step in their relationship this weekend, as they were spotted out in public with Meghan's mother, Doria Radlan.

After the pictures of their first ever public appearance together were published last week, when the pair attended the wheelchair tennis event at Invictus Toronto, now new photos of the couple have emerged showing them taking another big step in their relationship.

Proving how serious they are about each other, and yet another indication that the pair could soon be heading down the aisle, Meghan and Harry were spotted hanging out with Meghan's mum Doria at the closing ceremony of the Invictus Games in Toronto.

Reports revealed that Doria had flown to Toronto specially from LA, where she lives, to attend the Invictus Games with her daughter and to spend time with Prince Harry.

It seems that Harry already gets on famously with his potential future mother-in-law, as the pair were seen laughing and chatting together in a private box at the ceremony, although it is not known when they first met.

After Harry left Meghan and Doria to take to the stage for his final address to the stadium to close the games, the mum and daughter duo were spotted 'clapping enthusiastically' during Harry's rousing speech, during which he 'urged the audience to take home the "spirit of Invictus"'.

For any couple, introducing your other half to a parent is a big step, but for Meghan and Harry to be spotted so publicly spending time with Doria is a likely sign of how serious they are about building a future together.

The loved-up pair were also seen cuddling and kissing in the private box at the stadium. Such public displays of affection are fairly rare for members of the royal family, leading many to speculate that the prospect of an engagement is now a case of 'when' rather than 'if' for the famous couple.