What the heck is Britney Spears doing? She's totally out of whack and is not even trying to regain control over her life!
Earlier, Britney was taken from her home to Cedar-Sinai hospital in an ambulance ... she is believed to have been under the influence of some unknown substance!!! Holy S***!
Late last night, Brit was with her two kids at her home (on scheduled visitation) then it seems she refused to return her two sons back to K-Fed!
As a result, police were called to her Studio City home, where they found her to be out of whack! So, an ambulance was called in and she was strapped to a gurney and taken to Cedar-Sinai for 'mental evaluation'!
After Spears arrived at the hospital, her father, Jamie, her ex, K-Fed and her pal Sam Lutfi were spotted there.
Britney is currently still in the hospital ... the story is still developing!
What a way to start your year Britney! Things are not looking good for ya!

Keep coming back for updates on Britney's crisis! Updates after the jump

- K-Fed's Lawyer Takes Advantage of The Situation!
- Britney Spears Blood Tests Negative
- More Details on Britney Spears' Custodial Dispute
- Britney Spears Visitation Rights Suspended!