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One Direction announces its newest member on Twitter (PHOTOS)

Jaclyn is an Idaho native who currently lives in Milwaukee. Having worked in radio, TV and as a newspaper reporter, she is an avid pop culture and news junkie. She also has a passion for photography and cooking (but is still learning to ...

Danny DeVito is joining One Direction:
No, seriously

One Direction fans are about to be surprised — it looks like the group has added a new member! Or at least, an honorary member.

One Direction plots with a fan for the best surprise ever (VIDEO)

The It's Always Sunny in Philadelphia actor has joined the band for their new video for the song "Steal My Girl." 1D member Niall Horan tweeted the exciting news on Friday, Oct. 10.

VIDEO: 1D unveils hilarious "You & I" perfume commercial

DeVito also seemed excited about the news, tweeting a photo of himself with the One Direction boys — as well as his bare ("troll") foot.

It may be hard to believe, but One Direction is getting ready to release its fourth studio album, Four, which will be out on Monday, Nov. 17. Back in September, the band released a free download to the album's song "Fireproof," but it looks like "Steal My Girl" will be the first single on their new album.

Season 10 of It's Always Sunny in Philadelphia is set to premiere in January 2015. DeVito will also be starring in Triplets, a sequel to the 1988 film Twins.

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