Watch Leona Lewis perform emotional song 'Memory' in Cats

​All the chills.

Leona Lewis has been lighting up New York City with her turn as Grizabella in the newly-reopened Cats musical on Broadway since it came back last month.

But the star stopped by Good Morning America to perform the iconic track 'Memory' from the stage show in her full Grizabella costume.

For those of you who won't be able to make it to the Big Apple to check out the show in person, it's a glimpse of Leona's big Broadway debut.

The former X Factor winner took over from Nicole Scherzinger to star in the Broadway version of Andrew Lloyd Webber's musical.

"Leona has one of the greatest voices of her generation," Lloyd Webber previously said. "We are all hugely excited about working with her."

Cats officially opened at the Neil Simon Theatre in New York on July 31 and is currently taking bookings for the rest of the year.

Meanwhile, Leona has been back in the studio working on new music, including a huge dance track with Alesso.

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