Miranda Bailey is in charge, even if her title doesn't say she's Chief Resident. Alex Karev knows it too.

Miranda tells Alex Karev who's boss around here. As if there were any doubt about that since his first days as an intern!

Rumor has it that Miranda Bailey is a little bit bitter and back to her bad-ass self in Season Four. Izzie Stevens could attest to this.

The Season Four cast of Grey's Anatomy: Starring the lovely Ellen Pompeo (Meredith Grey), Patrick Dempsey (Derek Shepherd), Sandra Oh (Cristina Yang), Katherine Heigl (Izzie Stevens), T.R. Knight (George O’Malley), Justin Chambers (Alex Karev), Chandra Wilson (Miranda Bailey), James Pickens, Jr. (Richard Webber), Sara Ramirez (Callie Torres), Eric Dane (Mark Sloan) and Chyler Leigh (Lexie Grey).

Miranda Bailey will have to pick up the pieces and move on after unexpectedly losing out to Callie Torres for the role of Chief Resident.

Not this season!

Miranda is concerned with George's career.

That's how Miranda Bailey works.

Dr. Bailey comes to Dr. Stevens' aid when she breaks down.

Miranda is running the show today.

That's where he seems most comfortable.

Miranda and Izzie gaze in astonishment as the Denny Duquette clinic makes its grand opening.