Hailee Steinfeld & Echosmith Perform at H&M at Sundance

Hailee Steinfeld strikes a pose backstage at H&M at Sundance Square on Wednesday (April 20) in Fort Worth, Texas.

The 19-year-old singer opened up the concert event with Echosmith members Sydney, Graham and Noah Sierota.

Hailee took to Twitter after her performance, writing, “THANK YOU @hm and @pandora_radio for tonight. I had such a blast and I can’t wait to hang out again soon.”

She also gave a shout out to her backup dancers.

“These girls set the stage on fire every time. I love learning from them,” Hailee wrote.

FYI: Hailee and Echosmith are dressed in H&M.

10+ pictures inside of Hailee Steinfeld and Echosmith performing at H&M at Sundance Square…