Shia LaBeouf Goes Full-Frontal Nude In Music Video [NSFW VIDEO]

The former Disney star is really growing up. "Transformers" actor Shia LaBeouf is showing the world what he's working with in Iceland band, Sigur Rós' new music video for "Fjögur Píanó."

LaBeouf appears in the video which he explained explores the topics of "addiction to drugs, or sex, or anything - and how you get stuck in a cycle."

According to the L.A. Times, the actor had helped develop the concept of the video with Alma Har'el, the filmmaker. LaBeouf stars alongside actress Denna Thomsen. The pair depict a dysfunctional and seemingly violent couple.

So how exactly did Shia LaBeouf end up naked in a music video for an Icelandic band? Sigur Rós' bassist Georg Holm revealed to Rolling Stone that Har'el had originally had an idea of filming the band playing piano lines on Super-8 in Iceland, but changed her mind when she met LaBeouf for dinner. The actor had contacted the filmmaker after watching "Bombay Beach," her winning Tribeca Film Festival documentary.

It turns out that the band had asked a dozen filmmakers to make a music video for a song off of their new album "Valtari." The Wall Street Journal reports that the filmmakers had a $10,000 budget and "no instructions." Har'el's beautiful (and a little odd) seven-minute video won the band's challenge.

Besides checking out a nude full-frontal LaBeouf, viewers get to see his dancing chops. A stint on "Dancing With The Stars" may be in his future.

"The things you can't say in words are best said in dance," explained Har'el.

Check out Sigur Rós' video for "Fjögur Píanó" below. You can also see Shia LaBeouf (presumably clothed) in the August release of the western crime film "Lawless."