These Surprising Red-Carpet BFFs Will Melt Your Heart

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FILE - This May 19, 2013 file photo shows actress Carey Mulligan, left, in a Deco-inspired white and black gown with keyhole opening with Justin Timberlake at the screening of "Inside Llewyn Davis" at the 66th international film festival, in Cannes, southern France. (Photo by Joel Ryan/Invision/AP, file) | Joel Ryan/Invision/AP

Sure, everyone seems "happy" to see each other on a red carpet. There are smiles, there are awkward hugs. But that's not what this slideshow is about.

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