Brace yourself, ladies -- Justin Bieber is single and ready to mingle!

The popstar hit up Ellen DeGeneres on Monday and talked about a slew of topics including his dating life, his shirtless summer and his butt-tastic photo.

When the daytime host asked JB if he was dating anyone, the heartthrob got coy and eventually said, "I'm single, ladies ... and ready to mingle."

The 21-year-old also added he's in no mood to settle down, "I don't know if I am ready for relationships right now."

Well we have a feeling that Hailey Baldwin, Kendall Jenner, Xenia Deli and whatever hot hookups Justin's had -- won't be liking this interview. But too bad for them because it looks like the Biebs is on the prowl!