Grande organised her One Love Manchester concert which went off without a hitch yesterday and featured performances from singers including Justin Bieber, Miley Cyrus, Robbie Williams, Katy Perry and Pharrell Williams.
You didn't see it on TV or online. but the crowd doubled down with resolve as they left the venue. She added: "I love you guys so much, and I think that the kind of love and unity that you're displaying is the medicine that the world really needs right now".
Sunday's concert will raise money for victims of the attack that struck at Grande's show on May 22.More news: WWE Extreme Rules 2017 Results
In one heartfelt moment, Grande was joined on stage by children from a local school, some of whom were at the targeted Manchester Arena concert, as the group performed her hit song My Everything.
She told the Press Association: "We felt we had to unite with London - obviously we have lost our daughter and we felt we needed to come and unite with them and let them know Manchester is supporting them and we are all here for them".
As well as performing many of her hits, she dueted with her boyfriend Mac Miller and Miley Cyrus and closed the concert by performing Somewhere Over the Rainbow, the classic song from the film The Wizard of Oz.
The producer/rapper was quick to quash the rumours that he mistook Manchester for London.More news: Scott wields veto pen on new budget
"I don't want to feel or hear or see any fear in this building", USA singer Pharrell Williams told the crowd as he led them in a rendition of his hit single "Happy". "We ask the strong city of Manchester and the world to join us in making the statement that hatred and fear will never win", Braun said. "The only thing we'll feel here tonight is love, and positivity".
The mother and stepfather of one of the young Manchester attack victims have laid flowers in memory of those killed in the London Bridge attack. Authorities have said the attack started with a van plowing into pedestrians and then involved three men using large knives to attack people in bars and restaurants at a nearby market.
And following the concert, the British Red Cross, who have been fundraising for their Manchester Emergency Fund, which was set up after the attack, tweeted: "We've raised an incredible £2.35 MILLION during #OneLoveManchester!".More news: Where to get free doughnuts on National Doughnut Day