And despite having just beaten the Malaysian team 4-0 in their opening game, the Australian players could hardly contain their excitement - and their shock that the Queen had 'even smiled'.
Jayde Taylor, who is pictured posing in the selfie with teammate Brooke Peris, immediately tweeted the photo - and seemed more excited about meeting Her Royal Highness than she did the win.
The 29-year-old told her 2,300 followers: 'Ahhh The Queen photo-bombed our selfie!! #royalty #sheevensmiled #amazing #Glasgow2014'.
The photo immediately swept the micro-blogging site, being retweeted thousands of times in one hour, complete with the hashtag #queenselfie.
Her teammate Anna Flanagan also tweeted: 'What a day!! 4-0 win over Malaysia... And we just met the QUEEN!!! #queenselfie #roovolution'
Jayde Taylor said: 'Brooke [Peris] and I planned it so that when she came out the door she would be behind us.
'And then she came out and smiled at the camera. We were in the right spot at the right time.'
Following their first game against Malaysia, the team were greeted by the monarch. The Queen spoke to Georgie Parker who had an ice pack on her leg.
She told the player: 'You're all very tough. It looks dangerous.'
She also told the sportswomen she had never played hockey herself, but that Philip had.
Ms Taylor said: 'We were warming down on the second pitch after our game and the Queen came out to meet Donny [Madonna Blyth, Australian women's hockey captain].
'She asked us a bit about the pitch, how we were going and told us to enjoy our time here. She was lovely, really, really lovely.'
Meanwhile, England hurdler Andy Turner also posted a selfie with the Queen at the Games.
As the Queen walked past in the background, he snapped a selfie and then wrote on Twitter: 'That's as good as it gets, some big bloke told me to jog on so thought it was time I moved.'
- Daily Mail
