In her newly leaked single "Rule the World," the 20-year-old pop star sings, "Our love was made to rule the world. You came and broke the perfect girl...forget you ever knew my name." (GASP) Take that Biebs!

Speaking of Justin Bieber, Olivia Wilde got a ton of hater tweets from Bieber fans!

After Justin Bieber was photographed walking the streets of London without his shirt on (and some saggy pants), Wilde tweeted, "Bieber, put your [expletive] shirt on. (unless you lost all your shirts in a fire in which case my condolences and please purchase a new shirt)."

Beliebers weren't happy, and Tuesday on The Tonight Show with Jay Leno she shared some of the response tweets she received. Most of which cannot be repeated here unfortunately.

But Wilde, being a funny and sarcastic good sport said, "At first I thought they were being mean but then I realized it's just helpful advice, like friendly advice I gave to him."