Well, historian Kate Bllen joins me now.
So expand, Kate thanks for joining us.
Regardless if the child is a boy or a girl ,he or she is next in line for the throne.
But explain to us for the first time in the history of the royals,what?
What's really interesing here is that previously you have to be a boy to get that throne.
Pretty much the only girl who get the throne are those with no brothers.
For exmaple, Victoria, Elizabeth the 2rd, Elizabeth the First.
Let's remember Henry the Eighth was so eager to have a son.
He acutally broke from the church of Roman, set up his new church, so he can marry his mistress Anne Boleyn .
In British history ,we always privilege the king and now it's completely deferent.
This baby ,if it's girl,will be our next queen and it doesn't matter how many brothers she has.
She will get the title ,
she will get the land and she will be richest woman in Europe,one of the richest women in the world.
And this I think is a big move forward,
that is to say,it's a big blow for female equality with saying women can do the top job.
And it also suggests really the Monarchy has caught up with rest of Britain where you know supposed to that equality.
It's interesing because the parliament just passed this.
You think this was what happened decades ago but it just happened relatively recently.
Two of England's best loved monarches were of course women.
There's only been 6 queens in the thousand years' history ,but Queen Victoria,Queen Elizabeth the second very very popular.
Could the birth of the baby girl be enough to modernize this Monarchy.
As you say the lord's been really rash to it but behind of European cousins ,Sweden for example but it foed over 20 years ago.
We are bits slow on the out-take,and yes the monarchy's got a lot tradition but you know every time we had a queen they made a lot of changes,
they are morden ,they are exciting.
Victoria and Elizabeth the second, and I think what makes the differences we love Elizabeth the second in this coutry.
She is one of our most popular monarches ,she set a great example in terms of longevity, in terms of political neutral and dignified.
Are we just wanting to another girl to do the same job,and that's so hopefully,we are going to see sometime this week.