Swift did not address the stabbing which killed Bebe King, six, Alice Dasilva Aguiar, nine, and Elsie Dot Stancombe, seven, as she told the crowd “we love you so much London”.
She has privately reached out to the families of the victims, the BBC reported.
In the aftermath of the tragedy, she said it had left her at a “complete loss”.
The 34-year-old singer said at the time: “The horror of [the] attack in Southport is washing over me continuously, and I’m just completely in shock.
“The loss of life and innocence and the horrendous trauma inflicted on everyone who was there, the families, the first response. These were just little kids at a dance class.
“I am at a complete loss for how to ever convey my sympathies to these families.”