The wedding, hosted in Venice, Italy, is expected to cost millions of dollars as residents protest the upcoming luxury event.

Among the big names on the approximately 200-person guest list for the Bezos-Sanchez wedding are celebrities like Oprah Winfrey, Mick Jagger and Leonardo DiCaprio, as well as Katy Perry, who traveled to space alongside Sanchez on a Blue Origin flight in April, the AP notes.

While Orlando Bloom jets to Italy for the famous wedding, the singer’s absence is adding fuel to rumors their romance may be on rocky ground