US federal TV regulators have launched an inquiry into Janet Jackson's Super Bowl performance, which left her more than a little exposed.
Jackson's right breast was seen by millions on TV after Justin Timberlake pulled at her bodice in what was a planned "costume reveal" during a duet.
"It was not my intention that it go as far as it did," said Jackson.
The National Football League has said that MTV could lose its contract to produce the half-time show.
"We were extremely disappointed by the show," said NFL commissioner Paul Tagliabue.
"It was totally inconsistent with assurances our office was given about the content of the show."
He added: "The show was offensive, inappropriate and embarrassing to us and our fans."
Michael Powell, Federal Communications Commission chairman, said it was a "classless, crass and deplorable stunt".
The FCC, the main government
media watchdog, has announced an inquiry to see whether the display of
flesh constituted indecency.
Mr Powell said he had ordered a "thorough and swift"
"The decision to have a costume reveal at the end of my
half-time show performance was made after final rehearsals," Jackson
said in a statement.
She added that MTV, which produced the half-time show, had been completely unaware of the plans.
The incident has sparked feverish debate in the US, following the controversial half-time show during the Super Bowl final between the New England Patriots and the Carolina Panthers.
Jackson's spokesman Stephen Huvane was quoted by CNN as saying the incident "was a malfunction of the wardrobe".
He said: "It was not intentional... he was supposed to pull away the bustier and leave
the red-lace bra."
Jan LaRue, chief counsel for the conservative Concerned Women for America group, called it a "pornographic show".
"We don't buy for a minute that this was not planned. Everybody knew what was going on here."