Rock star Courtney Love has been arrested after allegedly injuring a man by throwing a microphone stand into the crowd during a New York performance.
Ms Love exposed her chest with her back to the audience
Ms Love was charged with third-degree assault and reckless endangerment after the concert at the Plaid nightclub at 0230 local time (0730 GMT) on Thursday.
A 24-year-old man received hospital treatment for head injuries.
The incident followed a TV appearance when she repeatedly exposed her breasts at talk show host David Letterman.
Ms Love, 39, had her back to the camera when she lifted her shirt several times while making her entrance on the set of the show.
She then stood on top of the presenter's desk, sang a few lines of folk song Danny Boy and exposed her breasts at him again.
When she sat down, she pointed at her chest and said "FCC", referring to the US Federal Communications Commission, a watchdog that is cracking down on indecency.
Of the crackdown, she said: "Is this like Reagan trickle-down economics? Is this like Bush trickle down?"
Love appeared on the Letterman show on Wednesday
She also defied the city's ban on smoking in public places by lighting a cigarette, asking Letterman: "Are you going to cut this because I'm smoking?"
He replied: "That won't be the reason we cut anything."
The former Hole lead singer then went on to perform a surprise gig at the nightclub in East Village, Manhattan. Ms Love was released by police after being charged.
The incident comes at a troubled time for the singer, as she faces four charges of drug possession and disorderly conduct that are being handled in two separate court cases in California.
Those charges stem from an incident in October 2003 when police said she tried to break into the home of a former boyfriend.
Ms Love is due to stand trial on two felony counts of possession of controlled substances, the painkillers Hydrocodone and Oxycodone.
She also faces misdemeanour charges of disorderly conduct and being under the influence of a controlled substance. She denies all the charges.
During his show, Letterman asked Love, the widow of former Nirvana frontman Kurt Cobain, if she could talk about one of the cases.
"Yeah, I'm not supposed to," she replied.
But later in the programme, when Letterman asked if drugs were involved, she replied: "One expired Percocet and one Ambien."
Percocet is a painkiller, Ambien is a sleeping pill.