Jay Z & Justin Timberlake: "Suit & Tie"
After a six year music hiatus (JT was busy with acting and other business ventures), the award-winning singer partnered with the rapper to release "Suit & Tie," the first single from his highly anticipated album.
Leonardo DiCaprio & Martin Scorsese
This actor-director pair started working together in 2002 and since then has produced five dramatic films together: Gangs of New York, The Aviator, The Departed, Shutter Island, and The Wolf of Wallstreet.
Justin Bieber & Ludacris: "Baby"
During Justin Bieber's initial rise to fame, he met Ludacris while living in Atlanta. The two teamed up to release a now 12-time platinum single that won the Biebs the Diamond Award, presented by the Recording Industry Association of America for the highest certified digital single in U.S. music history. What a collab!
John Mayer & Frank Ocean: "White"
Not only did John Mayer lay down some vocals for "White" on Frank Ocean's Channel Orange album, but he also appeared with the rapper in the "Pyramids" video and onstage for his SNL performance.
Matt Damon & Steven Soderbergh
You might know the twosome for their work together on the Ocean's trilogy, but this actor-director duo also collaborated in Contagion and HBO's hit drama Behind the Candelabra.
Sofia Vergara & Kmart
The actress teamed up with the retailer to create a collection of clothing, she later expanded the line to include home accessories and shapewear.
Ben Affleck & Kevin Smith
The actor-turned-director has appeared in several of Smith's films, including Mallrats, Chasing Amy and Dogma.
Miley Cyrus & will.I.am: "Fall Down"
This hit collab is more of an urban contemporary sound rather than the electro-dance vibe of will.i.am's previous singles. The two artists performed "Fall Down" on Jimmy Kimmel Live.
Johnny Depp & Tim Burton
Perhaps one of the best known film collaborations is between Johnny Depp and his close friend Tim Burton—their work together includes Edward Scissorhands, Sleepy Hollow, Choolcate and the Chcolate Factory, Corpse Bride and Alice in Wonderland.
Lindsay Lohan & Estrella Archs
The two teamed up to design the Spring 2010 Emanuel Ungaro collection. Ungaro's CEO, Mounir Moufarrige, admitted that the main reason behind hiring the actress was to generate publicity.
Morgan Freeman & Clint Eastwood
The well-respected Hollywood veteran actors have been friends for decades, working on Unforgiven in 1992, Million Dollar Baby in 2004 and Invictus in 2009.
Beyonce & H&M
Earlier this year, we found out that Queen B would be the new face of H&M's Summer 2013 collection. And let's just say the pop diva did not disappoint at all, just look at these ads and this music video!
Arnold Schwarzenegger & James Cameron
Known mostly for The Terminator and its sequel, James Cameron and Arnold Schwarzenegger are also working together on a multi-episode documentary series on climate change titled Years of Living Dangerously scheduled to be released in 2014. Other big names on the project include Matt Damon and Alec Baldwin.
Rihanna & River Island
After a successful spring and summer collection debut for the British clothing brand, the stylish singer is set to release another line for Fall 2013.
Adam Levine & Kanye West: "Heard 'Em Say"
Kanye West played "Heard ‘Em Say" for Adam Levine while the two were together on a flight. The Maroon 5 singer had just written a hook that he felt was perfect for Kanye, saying "It was one of those natural collaborations where you're so excited because it's all very pure and very easy."
Madonna & Nicki Minaj: "Give Me All Your Luvin'"
The Harajuku Barbie and Queen of Pop teamed up to create this top 10 hit, a dance pop song with elements of disco and new wave.
Woody Allen & Scarlett Johansson
Johansson first teamed up with the filmmaker in Match Point. She went on to work with Allen in Scoop and Vicky Cristina Barcelona.
George Clooney & Steven Soderbergh
"If there were 500 of him, you could take over an entire country," said the director of his frequent colleague, adding, "Of course three weeks later you'd lose it again because of all the parties." Not only have the two worked together in the Oceans films, but also in projects like Solaris and The Good German.
Rihanna & T.I.: "Live Your Life"
T.I's song speaks of the rapper rise to fame and his optimism of the future, even commending the American troops fighting overseas. As for Rihanna's involvement, the rapper had said that he could just "hear her voice on the record" even before they recorded together.
Christina Aguilera, Mya, Lil Kim, Pink: "Lady Marmalade"
The version sung by this group was released on the Moulin Rouge! Soundtrack, hitting No. 1 on the BillBoard Hot 100 for five weeks. The ladies also each won a Grammy award for this hit.
Kate Moss & Topshop
After three years and 14 collections, the model released her final line with the British retailer in October 2010.
Nelly & Tim McGraw: "Over & Over"
The rapper and the country star collaborated back in 2004. Although Nelly considers the song to be "country," McGraw thinks "'It ain't nothin' country about this song." Either way, we love the jam.
Kirsten Dunst & Sofia Coppola
Girl power alert! These two Hollywood ladies have collaborated on big-screen films such as The Virgin Suicides, Marie Antoinette and most recently, The Bling Ring.
Taylor Swift & B.o.B: "Both Of Us"
Taylor Swift came up with the collaboration idea after visiting B.o.B's record label Grand Hustle in Atlanta, using her and the rapper's real life experiences in the song about bullying and racism.