I learned so much about working with celebrities from Jackie Fast at Sandbox Studios :

* Celebrities are not doing this for impact.  It is for the money * George Clooney's $1B payday from Casamigos caught everyone's attention * It's not only about choosing the right celebrity, it's also about having the right team around them * Celebrities are so eager to work with startups, they are resorting to DMs * Celebrities and startup collaboration is going to explode