British teenage tennis sensation Emma Raducanu has made history - and social media has gone absolutely crackers.

Her sensational victory at the US Open came in only her second Grand Slam appearance.

The 18-year-old is already a national hero.

READ MORE: Emma Raducanu seals US Open victory as British teenager makes history

The Queen - yes THE QUEEN - said: "It is a remarkable achievement at such a young age, and is testament to your hard work and dedication."

People on social media - tennis fans and those coming fresh to the sport - have gone wild for Raducanu following her victory against against fellow teenager Leylah Fernandez.

Aaron Eastwood tweeted: "Emma Raducanu is a star. That was some match."

Simon Thomas said: "What were you doing at 18?"

Sam Quek tweeted: "Not even hyperbole - That is one of the greatest sporting achievements in British history.

"A teenage qualifier, never drops a set or even more than four games in any set for the entire tournament! And goes on to become the #USOpen Champion!"

Sonia York-Pryce said: "Fantastic victory Emma! Incredible match, two incredible, inspiring awesome women!"

Another person posted simply: "HISTORY MAKER."

What a night.