In this episode, we delve into the intriguing question of why there are no stars with a diameter of one light-year. We introduce WOH G64, the largest known star as of 2024, along with other notable red supergiants like UY Scuti and Stephenson 2-18. The discussion covers stellar evolution, the physical limits of size and luminosity, and the future fate of these massive stars, enhancing our understanding of the universe's complexities.