Rihanna
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#HappyBirthdayMeghanTrainor! 16 Collabs We Would LOVE To See The Singer Arrange!

4. Rihanna
Rihanna would be a dream person to collaborate with for a lot of stars – and Meghan is determined to make it happen. She’s already got plans to write for RihRih – but she’s got to fit it in her schedule. Meghan has said, “I want to write for Rihanna but I haven't had a second to do it. When I travel I don't have my rig with me to produce, I should start doing that." Picture: Getty