Sigh: Sources Say Whitney Houston's Crack Abuse Is At It's Worst

"Whitney is doing crack again. It's the worst it's ever been. Whitney went on tour again, and that's when the relapse occurred. Whitney's shutting a lot of people out of her life. It is a dire situation." - via Perez Hilton

Yesterday it was reported that Whitney would be starting an outpatient rehab program, but for reasons other than substance abuse. Whit and her ex-husband have had a long-standing public history with drug usage and 21-year-old daughter Bobbi Kristina is worried to mirror her parents doleful footsteps.