Catherine, Duchess of Cambridge attends the National Review of Queen's Scouts at Windsor Castle on April 21, 2013.
Catherine, Duchess of Cambridge attends the National Review of Queen's Scouts at Windsor Castle on April 21, 2013.
Olivia Harris - WPA Pool/Getty Images
London CNN  — 

Britain’s Parliament on Monday approved for the final time a bill ending the principle of men taking precedence over women in the line of succession to the throne.

The change will go into effect once it has been approved by the 15 other realms of the Commonwealth where Queen Elizabeth is head of state.

The new rules cover the baby expected by the Duke and Duchess of Cambridge, due later this year.