Charisma.
If you were to go look up synonyms for “star power”, then this would be one of the first words suggested to you. It’s a perfect blind of the NBA and everyday life’s meaning of the word - in the league, the term is used best when describing the pull that a player has on his respective front office along with their appeal amongst fans. But in the real world, it’s a bit more simple - it’s just a term that's directed towards someone that just has it.
“It” is a type of enchantment that’s bespelled upon those around you and creates a seemingly magical desire for them not only to flock towards you but for cameras to also flash upon you.