Several prominent musicians and artists will perform at President-elect Donald Trump's inauguration on Monday, but they'll be far from the only big names in attendance.

As Donald Trump raises his right hand to take the oath of office on Monday, the world’s three richest men — Elon Musk, Jeff Bezos and Mark Zuckerberg — will be there to witness it. The trio, who hold sway over companies worth trillions of dollars,