Twice as Nice: 12 Unforgettable Duets

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On February 4th, Toni Braxton and Babyface will release their duet album Love Marriage & Divorce. Together they've created a number of new hits including "Hurt You" and "Roller Coaster" to name a few. But these two veteran entertainers teamed up for many of Braxton's early hits like "Breathe Again" and "How Could An Angel Break My Heart."

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In 1998, there weren't two bigger stars on the planet than Mariah Carey and Whitney Houston. The divas teamed up for the song "When You Believe" off the Prince of Egypt soundtrack. Not only did the song climb to the top of the charts, it earned an Oscar for Best Original Song.

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"A Whole New World" rose to the top of the Billboard Hot 100 in 1993, unseating Whitney Houston's epic 14-week run at number one with "I Will Always Love You." The duo's version of the song will always be known as the definitive theme of the animated film.

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There weren't two men who ran the '90s in style better than Diddy and Mase. From Harlem World to Welcome Back, when ever these two collaborate it's nothing but a party.

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Marvin Gaye and Tammi Terrell's reign as the hottest musical duo was only just getting started when it came to an abrupt end. Together, they sang hit after hit like "Ain't No Mountain High Enough" and "Ain't Nothing Like the Real Thing."

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What happens when the two hottest rappers collide for one album? Magic! Fans are still raving about their Watch the Throne album and tour.

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The music industry's most sought after couple, Beyoncé and Jay Z, are pretty awesome at collaborating. Together, they've done 11 songs and counting. Their latest effort, "Drunk In Love," made a splash debut at the 2014 Grammys.

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"Endless Love" performed by Diana Ross and Lionel Richie took on a life of its own in 1981. Not only did it soar to the top of the charts, it was nominated for an Academy Award for Best Original Song. Sadly it was their only duet.

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Monica and Brandy collaborated on the "Boy Is Mine" in 1998. That summer it spent an amazing 13 weeks at number one on the Billboard Hot 100. The following year it picked up the Grammy for Best R&B performance by a Duo or Group. In 2012, the ladies reunited and collaborated on "It All Belongs to Me."

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Dubbed as Michael and Janet's response to the negative media attention the family received during Michael's child molestation accusations, "Scream" turned into a big hit in 1995. The black and white video, directed by Mark Romanek, cost a whopping $7 million to make.

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"I Can Love You" featuring Lil Kim was lifted from Mary J. Blige's third album, Share My World. These two uniting on a single track was match for the ages: the queen of R&B meets the queen of rap. It proved to be wildly successful for fans and critics alike.

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One of the biggest New York anthems to ever be released, "Empire State of Mind," was nothing but solid gold for Alicia Keys and Jay Z. The duo was called upon to perform it every where from the World Series to the BET Awards. The song went on to sit at number one on the Billboard Hot 100 for five consecutive weeks and it won the Grammy for Best Rap/Sung Collaboration and Best Rap Song.