In Touch magazine claims the singer and husband will hold a ceremony in October, shortly after the birth of Britney's second child.

The couple will invite hundreds of friends and family, and Britney hopes "to show the world she is happily married".

The magazine also reveals she has given Federline a credit card without a spending limit, in order to "prove how much she trusts him".

In other news, Britney Spears's second baby is expected to arrive on Halloween. The singer was expected to give birth next month, but her husband Kevin Federline let it slip that his wife is planning a Halloween labor when he appeared on a Los Angeles radio show reports Star Pulse Blog

Speaking on DJ Ryan Seacrest's KIIS FM show, Federline told the host his second child with Spears was due "soon" and then blurted out "October 31". When pressed about his future family plans, Federline told Seacrest, "I'm gonna slow down for a little while, I promise."