Given these four music acts' multi-faceted careers, it's not surprising to see them all ranked in the top five of Forbes' newly revealed World's Most Powerful Celebrity list. But it is pretty surprising to see that Jennifer Lopez landed the number one spot above Oprah Winfrey. Behind O and her massive fortune are Justin Bieber, Rihanna, and Lady Gaga, who round out the top five thanks to their income, TV/radio presence, social media dominance, and other factors.

You can view the full list and credentials at Forbes.