Which celebrity was the first to sign a major retail deal that included both endorsement AND creative input on product design, effectively pioneering the modern celebrity retail collaboration model in the 1980s?

Before social media transformed celebrity endorsements into the influencer marketing we know today, certain famous personalities pioneered new approaches to retail product promotions that changed the industry forever. This question explores a groundbreaking moment in retail marketing history when a celebrity's involvement went beyond traditional endorsement to actually reshape product development and marketing strategy.

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Michael Jordan with Nike (Air Jordan)
Elizabeth Taylor with Elizabeth Arden (White Diamonds perfume)
Bill Cosby with Jell-O
Brooke Shields with Calvin Klein jeans