Kate Middleton in a blue coat

What do we want? Kate's coat. When do we want it? Now!

Kate Middleton may be six months pregnant just she's certainly not going to let a little thing like a growing baby bump get in the way of her style. 

The 33-year-old Duchess of Cambridge has been hard at work with her royal duties over the past couple of weeks but we reckon her latest maternity look may be one of her best yet. 

Making her way to attend a coffee morning with volunteers and families from deprived areas who benefit from the Family Friends charity's mentoring service in Ladbroke Grove in London's Chelsea district, Kate looked as gorgeous as ever in a striking icy blue coat, navy court shoes, a coordinating clutch and drop diamond earrings. Gorgeous. 

We all know Kate has long-time championed the Great British high street, so it comes as no surprise that her outfit was made up of very affordable pieces from it; most notably her stunning cover-up. 

Kate chose to wear a coat from award-winning maternity fashion brand Seraphine — a label which she initially sported during her first pregnancy with Prince George. While you can't really see it, she also wore a beautiful floral dress from the label, which you can get a better look at here...

As per usual, the 'Kate-effect' didn't take long to kick in and the now infamous £195 pastel blue coat has already sold out! Just in case the brand gets any returns, you may want to keep tabs on it.

If you're pining over Kate's coat just as much as we are, you'll be very pleased to hear that pale blue coats are still one of this season's biggest trends, so there are still HOARDS of them on the high street (including a couple of selected styles that have hit the sales.)

We've found the best Kate Middleton look-a-likes around that — whether you're expecting or not — will allow you to take on the chill in serious style. 

Well, if it's good enough for Kate... 

Double-Breasted Pea Coat With Black Buttons, £42, BHS
If you're crafty, you might want to consider replacing the statement black buttons on this coat for luxe silver styles instead so it's just like Kate's...

Belted Pale Blue Coat, £99, Marks And Spencer
We love this gorgeous belted coat — the metallic buttons look super chic and the waist-cinching belt will pull your look together in a flash. For ladies with growing bumps, we recommend you swap the chunky belt for a thinner style, positioning it above your bump. 

High Neck Coat, £115, Reiss
From its asymmetric fastening to its fitted waist, this coat oozes sophistication. Pair it with dark skinny jeans and grey suede boots for the ultimate off-duty combo. 

Continued below...

We can't believe we've only got three more months of Duchess Kate's faultless maternity style. Lets make these last few weeks count! In the meantime before her next outing, check out our edit of Kate's gorgeous maternity style in pictures...