oh dear.

The comedienne Joan Rivers is at Mount Sinai Hospital now, according to TMZ, which adds that she's currently in critical condition.

TMZ hears that she "was rushed to a hospital... after she stopped breathing during a surgery on her throat ... TMZ has learned. We're told Rivers was undergoing the throat procedure in a clinic (specifically on her vocal chords) ... when she stopped breathing during the surgery." Apparently the 911 call made at 9:39 a.m. recorded someone saying, "We have somebody in either cardiac or respiratory arrest." (via)

UPDATE! she's been upgraded to stable condition. omgthankgoodness.