Which celebrity's product line caused JCPenney to lose approximately $1 billion in revenue during its brief 16-month partnership?

In the glitzy world of celebrity endorsements, not every star-backed product turns to gold. Sometimes, famous faces can't save a product from flopping spectacularly. This trivia question focuses on one of the most notorious celebrity product failures in retail history. Can you identify which celebrity's ambitious product line resulted in a staggering financial loss for the retailer that partnered with them?

This is a live public trivia poll on AIPolls.Net. Vote and see real-time results.

Martha Stewart's home collection
Ellen DeGeneres' ED clothing line
Rihanna's Fenty clothing collection
Kanye West's Yeezy Gap partnership