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Happy Birthday, Nicki Minaj! The rapper, pop singer, and American Idol Judge turns the big 3-0 today. Never one to shy away from bold hair hues, Minaj’s locks have been every color of the rainbow. From neon green to hot pink and everywhere in between, this diva loves her transitions! In honor of her birthday, we’re taking a look back at all of her ever-changing hues and her many interesting up-dos!