Zooey Deschanel and Joseph Gordon-Levitt have paired up for another project - but this time, it isn't a film.
Deschanel and Gordon-Levitt, who both co-starred in the 2009 film "500 Days Of Summer," have teamed up to create a video that has quickly become a YouTube sensation. Deschanel posted a video to her website, hellogiggles.com, featuring the two performing a duet to Nancy Wilson's 1963 song, "What Are You Doing New Year's Eve?" The video, which features the two strumming a cover to the classic song, has garnered over 1 million views - overnight.
Along with posting the "karaoke special" to her website, she also posted a blurb about her co-star and "dear friend," Gordon-Levitt.
"I have known Joe Gordon-Levitt for going on 12 years," the performer wrote on her website. "We first met in the summer of 2000 while doing a tiny movie called Manic, where we bonded over a mutual appreciation for Harry Nilsson and Nina Simone and I have been lucky enough to call him one of my dearest friends ever since."
"When we did 500 Days of Summer 8 years later, we spent every lunch hour dancing to Marvin Gaye in the hair and makeup trailer; we had loads of fun," she continued. "I hope to do a thousand more movies with him because he's simply the best. But in the meantime, we made a little New Year's duet for all of you! The original by Nancy Wilson. ENJOY! Don't forget to check out Joe's website http://hitrecord.org/"
For the debut of the festive video, the 31-year-old actress and singer took to her Twitter account.
"Go to http://www.hellogiggles.com at exactly 11am PST for an exciting new video from @hitRECordJoe and me!" she Tweeted on December 29.
Gordon-Levitt, 30, reTweeted the actress the same night, adding a happy face to his post.
Deschanel recently made headlines for her reported separation from Death Cab for Cutie frontman Ben Gibbard. The two were married in September 2009.
It was announced in September that her series "The New Girl" was picked up for a full-season by Fox. Her character, named Jess Day, is an awkward 20-something who finds out her boyfriend is cheating on her and is forced to live on her own. Day moves in to an apartment with three male roommates, and the antics begin.
Deschanel, who aside from acting also sings in the indie rock band She & Him, recently sang the national anthem during Game 4 of the World Series. She & Him released a Christmas album on October 24.
In April 2011, it was confirmed that Gordon-Levitt would be a part of the highly-anticipated 2012 Batman film, "The Dark Knight Rises." The actor will be playing John Blake, a Gotham City beat cop assigned to special duty under the command of Commissioner Gordon. Gordon-Levitt will be joined by his "Inception" co-stars Marion Cotillard, who plays Wayne Enterprises board member Miranda Tate, and Tom Hardy, who portrays the villain Bane.
It was confirmed in mid-January that Anne Hathaway will star in "The Dark Knight Rises" as Selina Kyle, whose alter-ego is Catwoman. In the DC comic books, the character is the love interest of Bruce Wayne, who masquerades as the superhero Batman.
"The Dark Knight Rises" is set for release on July 20, 2012.
See the video of Zooey Deschanel and Joseph Gordon-Levitt performing "What Are You Doing New Years Eve?" below.