Saoirse Ronan and Jimmy Fallon got into the Irish Christmas spirit on Fallon's "The Tonight Show" back in 2018.

We must admit as soon as we read the words Saoirse Ronan and “The Fairytale of New York” we started to panic having a flashback to her much-beguiled “Saturday Night Live” Aer Lingus skit that went down like a lead balloon.

However, despite Jimmy Fallon’s questionable accent, the Irish American duo pulled off a pretty great version of The Pogues Christmas classic “The Fairytale of New York.”

Ronan was on “The Tonight Show” ahead of the release of her new movie “Mary Queen of Scots," which arrived in theaters on Friday, December 7.

Fallon, who has strong Irish roots, and the New York native Ronan, who grew up in Co Carlow, celebrated their Irish heritage in the surroundings of a mock Irish pub during the festive "Tonight Show" episode.

We must say the show’s band, The Roots, did a great job covering the Shane MacGowan and Kirsty MacColl Christmas classic!

You can watch Saoirse Ronan and Jimmy Sing "Fairytale of New York" back in 2018 here: