Woody Harrelson writes heartwarming yet hilarious poem in response to baby who looks like him

We all know someone who thinks they have a celebrity lookalike ... but not many can say they've got their famous doppelganger to agree.

Actor Woody Harrelson has gone viral after penning a sweet poem in dedication to a nine-month-old baby girl who happens to look just like him.

Dani Grier Mulvenna from Northern Ireland took to social media to share a photo of her daughter Cora in a side-by-side comparison to the Zombieland actor.

"Ok but how does our daughter look like Woody Harrelson," she tweeted.

It didn't take long for the tweet to go viral and all that attention eventually made its way to Woody himself.

"Ode to Cora," he began his poem. "You're an adorable child / Flattered to be compared / You have a wonderful smile / I just wish I had your hair."

The poem was, of course, a hit with Mulvenna and Woody's fans.

Commenting on the poem, she wrote: "You've made our day ❤️ can't wait to show her this when she's older. You have another fan for life."

"It's not every day Woody writes your daughter a poem," she later tweeted.

Too cute.