For proof, just look at her party-ready maternity wardrobe ... Gretchen wore a regal gown made of sapphire-hued satin. She also wore a white fur stole, which just added to the princess effect ...

Over the course of those two years, she wore a variety of classic looks, including polka-dot maternity dresses, knit sweaters, and even ball gowns ... character Rachel Green wore cropped shirts ...

From bump-baring two-pieces to sheer chic looks, these celebrity moms rocked some of the most iconic maternity ensembles of all time Ball made history ... chic black velvet dress in 1991.

Celebrities often put daring twists on maternity fashion ... she attended the Angel Ball wearing a pastel-yellow gown with a plunging neckline. The formfitting dress also had long sleeves, a ...

From billowing dresses and maternity corsets intended to conceal a woman's baby bump to the formfitting trend seen on expectant mothers today, see how pregnancy fashion has changed over the years.

Ahead, appreciate the artwork, and shop the exact dress and pumps Middleton wore. The Princess of Wales, who arrived for a concert alongside Price Charles, wore an emerald-green ball gown by ...