Some of the world’s biggest music stars — from Sam Smith to Celine Dion — paid tribute to Frank Sinatra by performing in “Sinatra 100″ on Sunday, a few days before Dec. 12, which would have been the crooner’s 100th birthday. But Lady Gaga, who performed last, stole the show.

The “Bad Romance” singer, who’s currently starring on FX’s “American Horror Story: Hotel,” donned a Sinatra-esque black tux, hat and bow tie before belting out a stellar rendition of “New York, New York” — it was almost uncanny how perfectly she got into character.

At one point in the rollicking performance, Gaga tossed her hat into the air, revealing a tight, short hairdo not so far from Sinatra’s own hairstyle.

CBS broadcast the concert, which was held in Las Vegas, at 9 p.m. Sunday night.

Other highlights from the show included Carrie Underwood and Seth McFarlane performing a medley of Sinatra hits as a duet and Zac Brown doing a classic rendition of “The Way You Look Tonight.”

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