Martha Mumford and Ada Grey are back with their third book about Royal Offspring. We've previously enjoyed "Shhh! Don't wake the Royal Baby" and "Happy Birthday Royal Baby" and though the cynical amongst you might smell a cash in rolled out ahead of the birth of Prince George's Brother or Sister, there's actually quite a lovely touching tale about siblings in this book.

The royal household is once again all-a-twitter as the new royal baby arrives home (the book quite neatly gets around naming the baby, or talking about a boy or a girl - very clever!)

Everyone seems to love the new arrival, but Prince George isn't quite convinced. What if the new baby wants to play with his favourite dinosaur, or steal his favourite jam sandwiches? What if everyone loves the new baby more than him?

Daddy (Prince William) knows just how to smooth the troubled waters with a new gift for George from his new Brother/Sister but soon George realises that it's actually tons of fun having a new little friend to play pirates or spaceships with.

A lovely addition to a story range that we were initially going to be quite sniffy about but were completely won over by. Charming and super-cute stuff from Martha and Ada!

We've just come back from a whirlwind visit around Windsor Castle and it was great to see that these books obviously have royal approval, as we spotted them in the gift shop there!

Charlotte's best bit: Charlotte always loves the incidental antics that the royal corgis get up to in these books! Little scamps!

Daddy's Favourite bit: A wry grin about Prince William discussing baby number 3 with a glint in his eye!

(Kindly sent to us for review by Bloomsbury Publishing)

I'll admit it, I inwardly groaned when "Happy Birthday Royal Baby" dropped through our letterbox as I expected it to be one of those awful 'cash-in' books released to mark the occasion of Prince George's 1st birthday.

I should've known better - this is Bloomsbury we're talking about, and they don't pin their colours to any old book, this is actually one of the funniest and most entertaining 'royal' tales we've seen in a very long time.

Preparations are afoot for the Royal Birthday! Auntie is drafted in to organise the party and more importantly the nosh (because she's a bit of a whizz at that, apparently!). Grandma and Grandad oversee the Royal Balloon Blower to make sure he fills the royal palace with balloons, and respected figures from far and wide gather for the celebrations, bringing huge presents with them by the truckload.

But something's wrong, the little prince does not look happy (Martha must've seen the many press pics of George looking like a little grumpy puss!) In fact he starts crying and no one seems to know what to do to cheer him up. No one should cry on their birthday should they?

Thankfully great grandma (the queen) is on hand to dispense royal wisdom. She knows exactly how to cheer up the little prince. With a snazzy jump suit, a sign-writing private jet and a parachute jump, queenie really brings a touch of class to the occasion and brings one very special super secret present with her...

You'll have to read the book to find out what it is - suffice to say that this is the point in the book where all parents will look at each other and exchange a knowing glance of "yep, been there, done that!"

Martha's story is entertaining and not at all what we expected - it's really brilliant. Ada's artwork is stunning too, just the right side of allowing you to identify who we're really talking about here - and also just the right side of cheeky in places (I am pretty sure that behind closed doors, Pippa does gad about on roller skates in a pink fairy tutu!)

"Happy Birthday Royal Baby" by Martha Mumford and Ada Grey is out today (hooray!), from Bloomsbury Publishing

Charlotte's best bit: Wanting an outfit like Auntie's (and a pair of pink skates to match)

Daddy's Favourite bit: There is divine wisdom in this book, imparted with a nod and a wink to all parents who have spent a small fortune on christmas or birthday presents, only for their little ones to fall in love with...(spoilers - read the book, you'll see what we mean!)

(Kindly sent to us for review by Bloomsbury Publishing)