Despite an online campaign by fans to "Free Britney," there remain more questions than answers about the pop star's well-being. Here's what we know.

In recent weeks, Britney Spears has burst back into the spotlight, as her private turmoil has led to several court hearings, spawned viral hashtags and fuelled frantic fan speculation about her well-being.

The renewed preoccupation follows her abrupt announcement that her planned Britney: Domination performance residency in Las Vegas was being put on hold indefinitely, new concerns about her mental health and questions about the role her ill father, and conservator, can continue to play in