Harry looked relaxed when he arrived at a symposium in Toronto, Canada, where he met a number of past and present competitors who publicly discussed issues that have affected them during past games.
The title comes from the Latin word "invictus", meaning unconquered or undefeated and the competition features more than 550 competitors from 17 nations and a dozen sports, including archery, cycling, golf, indoor rowing, and wheelchair basketball.
Harry, who founded Invictus and held the inaugural Games in 2014, will be in Toronto from September 22 to September 30.
The Suits actress has not yet confirmed whether she will be by Harry's side, but the brunette beauty does live in Toronto.
Royal sources have suggested that if she does attend, it will be as a private citizen and there is no guarantee she will even sit with the Prince. I hope what people will understand is that this is our time. That fact, combined with the fact that Meghan told Vanity Fair earlier this month that she and Harry are "really happy and in love", has led to mounting expectations that the pair will make their first joint public appearance during the event for wounded service personnel. "It's amusing, our nanny was there and she came into the room with the kids and I said 'This is Harry" and it took her five or six minutes before she realised it was the prince of England. "This is for us". Deadline reports that Meghan Markle's ex-husband, Snowfall producer Trevor Engelson, is making a Fox comedy about being left for a British prince.
Meanwhile, Kensington Palace yesterday announced that Harry is to make his first official visit to Denmark. Interviewed by the BBC on Wednesday, September 20, the former drummer of Nirvana, became leader of the Foo Fighters, evoked for the first time his friendship with the prince.
He will tour the capital Copenhagen on October 25 and 26 in what may be seen as another royal charm offensive to soften up Britain's neighbours ahead of Brexit.