The pop star's eagerly anticipated new single was due to hit the airwaves in the U.S. on Monday, but a snippet of the track was leaked online by a radio station in Tennessee late last week.
And now bosses at Jive Records' Zomba Label Group have delayed the release of the tune until September 29 at the earliest.
According to online reports, the current mix of "Womanizer," the first release from Spears' forthcoming album "Circus," was not the finished version.
A source tells E! Online, "The mix was not finalized."
Source: http://www.sfgate.com/
The leaked song has now been removed from the Nashville radio station's Web site.