What Kate Middleton Will Wear When She Introduces the Royal Baby

Exclusive! Duchess of Cambridge's former stylist Nikki Pennie predicts her look

Now that Kate Middleton is (finally!) in labor, the fashion world is eagerly anticipating her very first post-pregnancy outfit with the royal baby.

It has been over a month since the expecting Duchess of Cambridge appeared in public and the next time the globe will get a glimpse of her is when she and Prince William leave the hospital with their new bundle of joy.

The wee Prince or Princess of Cambridge's debut will be another iconic fashion moment for the new mom, as memorable as her engagement announcement and the royal wedding.

So, what will she pick for the special occasion?

Kate's former stylist Nikki Pennie predicts it will be "something comfortable, low-key, conservative, and appropriate," she exclusively tells E! News. "I'm pretty sure it will be a dress and maybe a jacket...She loves wrap dresses, empire waists, and V-necks dresses."

Don't expect Kate to hide in layers of clothing either. Just like during her pregnancy, Nikki predicts she will wear "a figure-hugging number that's still very streamline and elegant. Definitely not a muumuu!"

And as for the designer? Middleton will stay close to home. "It's definitely going to be a British designer, says Nikki. "It could be Topshop, Issa or Alexander McQueen."

While Kate famously wore a polka-dot dress twice during her pregnancy, Nikki thinks that for the royal baby debut she will go with a solid color dress, just as she did for her engagement press conference.  "She will probably pick a very classic neutral or a pretty summer color like emerald."

One thing that Nikki is beyond sure of: The ensemble will sell out. "Her looks always sell out because she wears clothing that are straight from her closet, very accessible and effortless."