The singer and Gossip Girl star pulls her shirt down while onstage

By People Staff
Updated October 23, 2010 12:00 PM
Credit: Giovanni Rufino/The CW

Taylor Momsen is turning into quite a shock rocker.

First, the Gossip Girl star posed on the November/December cover of Revolver in a barely-there outfit – and with some serious firepower, including a rifle, a handgun and a packed holster on her thigh.

Now the Pretty Reckless rocker is upping the shock factor: On Thursday in New York, Momsen, 17, flashed her breasts during a concert with her band.

Momsen was running her hands over her chest while singing and pulled down her ripped shirt – to briefly reveal to the crowd that she had black tape in the form of an “X” covering her most private parts.

Did she go too far?