Taylor Swift reached out to the families of the victims that were killed in a mass stabbing in Southport, England last month ahead of her defiant return to the stage in London, according to a report.

The 14-time Grammy winner, 34, resumed her sold-out Eras tour in London Thursday night, where she kicked off a 5-night run of her last European leg of the global tour.

The gig was said to have been Swift’s “hardest concert of her career” after three little girls were killed at a dance class inspired by Swift’s music.

Taylor Swift performing with a guitar on stage during 'The Eras Tour' at Wembley Stadium in London, EnglandTaylor Swift has reportedly reached out to the families of the victims that were killed in a mass stabbing in Southport, England last month.

Gareth Cattermole/Getty Images for TAS Rights Management

Alice da Silva Aguiar, 9, Elsie Stancombe, 7, and Bebe King, 6, were killed when a knifeman entered the dance class on July 29. Ten others were seriously injured.

Despite not addressing the heartbreaking tragedy onstage, Swift had reportedly been in contact with the victims’ loved ones before taking to the stage at Wembley Stadium.

“Taylor may not have spoken about Elsie Dot, Alice and Bebe on stage but she has reached out to their families,” a source told the Sun. “It is something that has weighed heavily on her mind.”

The Post has reached out to Swift’s reps for comment.

Just one day after tragedy struck, Swift released a statement saying she was “completely in shock” over the news.

A smiling girl identified as Elsie Stancombe, one of the victims of the mass stabbing at a Taylor Swift themed dance class in Southport, UK.

Elsie Stancombe, 7, was one of the three little girls killed at a dance class inspired by Swift’s music.

Merseyside Police

“The horror of yesterday’s attack in Southport is washing over me continuously and I’m just completely in shock…,” the “Fortnight” hitmaker wrote on July 30.

“The loss of life and innocence, and the horrendous trauma inflicted on everyone who was there, the families and first responders.”

Bebe King, a 6-year-old girl in a black shirt, who was tragically killed during a dance class.

Bebe King, 6, was killed when a knifeman entered the dance class on July 29.

Merseyside Police / SWNS

“These were just little kids at a dance class,” Swift continued in a message to her 283 million Instagram followers.

“I am at a complete loss for how to ever convey my sympathies to these families.”

Alice da Silva Aguiar, 9, one of the girls killed in the Southport knife attack on July 29.

Alice da Silva Aguiar, 9, succumbed to her injuries the day after the harrowing attack.

Family Handout

Following the horrific attack, Swift’s fans have raised thousands of dollars for the families of the victims.

The “So Long, London” hitmaker was then forced to pull the plug on three of her Vienna shows due to a foiled terror plot.

Pallbearers carrying the coffin of nine-year-old Alice Da Silva Aguiar out of St Patrick's Catholic Church in Southport, England

Just one day after tragedy struck, Swift released a statement saying she was “completely in shock” over the news.

Getty Images

On Aug. 7, local authorities in Vienna announced the arrest of three teens, who pledged allegiance to ISIS, and reportedly “wanted to carry out an attack” outside of Ernst Happel Stadium to kill “as many people as possible.”

The suspects, aged 15 to 19, allegedly planned on using homemade explosives and knives in the attack.