We must admit that we were heartbroken when Nick Lachey separated from Jessica Simpson in 2005, but when he met Vanessa Minnillo, we perked right up. Since the two were bit by the love bug, they've been spotted traveling the world and walking the red carpet (while grinning ear to ear).

In honor of their shared birthday in this installment of Style Transformation, see how the gorgeous celeb duo has grown throughout the years!

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Photo Credit: Hanah Foslien, Getty Images