"We are all just waiting by the telephone..." says Camilla, Duchess of Cornwall, when she spoke with Express about the Duchess of Cambridge. And so is everyone else, Camilla!

Before Catherine, Duchess of Cambridge finally welcomes the royal baby, let's take a look at her five best maternity dresses - designer style!

With its baby blue hue, the Duchess' Emilia Wickstead dress was perfection. Catherine wore the cap-sleeved number to the National Portrait Gallery. The textured, empire-waist number was dressy, yet its fit looked comfortable, especially around the Duchess of Cambridge's belly. Grey suede pumps complemented her lovely dress.

The Duchess of Cambridge had a lot of fun with coat dresses during her pregnancy. The mum-to-be wore a splashy, printed number for a party at Buckingham Palace. Catherine's Emilia Wickstead coat was so cheery, what with its yellow colour and streamlined silhouette. A beribboned hat topped Kate's party attire and nude pumps and a gold clutch completed her outfit.

Next on the list of Kate's best bulging belly designer dresses is actually quite a steal. The Duchess returned to her high street roots when she wore a polka dot Topshop dress for a visit to the Warner Brothers Studios. Kate expertly layered her dress with a sleek, black jacket.

The Duchess of Cambridge showed off another stellar coat dress outfit when she stepped out for the Scouts Parade. Her mint green Mulberry coat, with its whimsical, embellished buttons, was a winning piece of outer wear - pregnant, or not!

Duchess of Cambridge-Inspired by ttinar featuring a ruched cocktail dress

Topping the list of the Duchess of Cambridge's most stylish maternity dresses is her sassy, animal print Hobbs outfit! She wore this bold number for the christening of the Royal Princess cruise ship. For a long-sleeved coat dress that was covered in Dalmatian spots, it felt very chic, and quite playful.

Start the slideshow for the Duchess of Cambridge in her best maternity dresses.

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