Britney Spears is a Gurney Girl

Paramedics rolled Britney Spears out of her home on a gurney earlier tonight after discovering she was “under the influence of an unknown substance.”

The pop princess was taken to Cedars-Sinai Medical Center for a mental evaluation.

Earlier in the evening, Britney refused to hand over sons — Sean Preston, 2, and Jayden James, 1 — to the bodyguard of the kids’ father Kevin Federline. Brit reportedly locked herself and her two boys inside her house and refused to let anyone in.

Police cars, helicopters, fire trucks and ambulances were all called, surrounding Brit‘s Beverly Hills home.

DRAMA! DRAMA! DRAMA!