Ariana Grande is sick of everyone hating on her pals Miley Cyrus and Justin Bieber, and she is not too shy to say so.

The 'Right There' singer vented to Reuters about the scrutiny the two stars are facing lately, and she wasn't happy about it at all -- especially because she's dealt with some on her own.

"I'm not gonna not live my life in fear of what people are going to say," Grande said bluntly about the public's obsession with her own personal life. "It's been more work to embrace, for a long time I was like, 'Why are they talking about that?' I just put out a #1 album on Billboard, can I talk about that?"

When asked about Cyrus, Grande snapped, "She's an adult she can do whatever the hell she wants, honestly. She looks amazing, she looks gorgeous. She looks stunning and she's having so much fun. If her choices aren't for you, don't look at it, move on, talk about something else, worry about bettering your life, not hers — she's fine," she continued. "Her life is the best it could be right now, you know? That's what bothers me about people and about society. It's like, 'shut up.'"

Her sentiments were similar for Bieber, with whom she toured briefly this summer. "He's doing the same thing as every other boy in the world right now," Grande said sharply. "He's just under a microscope and he's being scrutinized by people that don't know him. I know him, and he's a good person — he really is, he's a nice person ... he's a good guy and he doesn't deserve what he's going through."

Preach!