On Sunday TLC will air a new documentary called William & Kate: Royal Baby Watch? The special will feature details about the couple's new married life, their plans and maybe even details on their move to Kensington Palace or their hunt for a permanent London residence.

As per the trailer (see below) another main focus of the special will be discussing why their marriage has to work and create no scandal. And then finally, the show will ask that burning question: When will Kate get pregnant with the royal baby?

More importantly, what will her maternity fashion look like?

Stars are known for their glamorous pregnancy fashion, will Kate be the same? It's hard to tell. She and Will have been acting pretty 'normal' since the wedding, refusing to hire servants and only bringing a small entourage on their tour of Canada and California.

Natalie Portman might be able to give her some advice. Natalie gave birth to her first child, a baby boy, earlier this week and looked absolutely stunning throughout her pregnancy.

Here's a look at maternity clothes--celebrity style.

Actress Jenna Elfman arrives at the premiere of the new film quotOld Dogsquot in Hollywood
Actress Jenna Elfman who is pregnant, arrives as a guest for the premiere of the new film "Old Dogs" starring John Travolta and Robin Williams in Hollywood, California, November 9, 2009. REUTERS
Actress Jessica Alba with husband, Cash Warren
Actress Jessica Alba, is pregnant with second child with husband, Cash Warren. REUTERS/Mario Anzuoni
Pregnant nominee Klum of quotProject Runwayquot arrives on the red carpet at the right at the 61st annual Primetime Emmy Awards
Pregnant nominee Heidi Klum of "Project Runway" arrives on the red carpet at the 61st annual Primetime Emmy Awards in Los Angeles, California September 20, 2009. REUTERS
Tina Fey
Tina Fey Reuters
Natalie Portman
A pregnant Natalie Portman who appears in "Black Swan", arrives at the 17th annual Screen Actors Guild Awards in Los Angeles Reuters
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