Update Consent

Kate Middleton Blue Seraphine Dress

Kate Middleton Tried to Hide This $100 Dress From Our Fashion Girl Eyes

As POPSUGAR editors, we independently select and write about stuff we love and think you'll like too. If you buy a product we have recommended, we may receive affiliate commission, which in turn supports our work.

Kate Middleton might have been wearing an old Sportmax coat when she stepped out for a Heads Together event at Roe Green Junior School in London, but what was underneath was quite a surprise. Kate didn't show off her custom Séraphine maternity dress ($99) until she was ready to give her speech, but once she did, we were smitten by the cut and color, a royal shade Kate wears so well.

The three-quarter-sleeved design comes complete with two gold buttons at the waist and a slightly flared skirt, a forgiving silhouette for moms to be. The number was available to shop at the time Kate debuted it, and even if you're not expecting, we found similar takes on the modest sheath. Ahead, check out Kate's piece, accessorized with Rupert Sanderson heels and a G Collins & Sons sapphire pendant to match her engagement ring, then choose your favorite version of her look and shop away.

Image Source: Getty

Image Source: Getty / Karwai Tang

Image Source: Getty / WPA Pool

Image Source: Getty / WPA Pool

Image Source: Getty / WPA Pool

Watch This!

Pop Quiz

Watch the Cast of Fear Street Play a Creepy Game of Horror Movie "Would You Rather"

Image Source: Getty / WPA Pool

Image Source: Getty / WPA Pool

Kate's Custom Royal Blue Sèraphine Dress

Sèraphine Royal Blue Tailored Maternity Dress ($99)

Sèraphine Royal Blue Tailored Maternity Dress
$99
from seraphine.com
Buy Now

Michael Kors Stretch Boucle Crepe Dress

Michael Kors 3/4-Sleeve Stretch Boucle Crepe Dress ($1,995)

Michael Kors Evening Dresses
from bergdorfgoodman.com
Buy Now

New York & Co. Button-Accent Sheath Dress

New York & Co. Button-Accent Sheath Dress - Petite ($29, originally $65)

New York & Co. Petite Dresses
from nyandcompany.com
Buy Now

ELOQUII Button Front Fit and Flare Dress

ELOQUII Button Front Fit and Flare Dress ($100)

ELOQUII Dresses
from eloquii.com
Buy Now

Tibi Crepe Shift Dress

Tibi Crepe Shift Dress ($119, originally $395)

Tibi Day Dresses
from saksfifthavenue.com
Buy Now

Aryeh Three-Quarter Sleeve Dress

Aryeh Three-Quarter Sleeve Dress ($64)

Aryeh Three-Quarter Sleeve Dress
$64
from shoptiques.com
Buy Now

Tory Burch Sydney Pleated Shirt Dress

Tory Burch Sydney Pleated Shirt Dress ($448)

Tory Burch Day Dresses
from bloomingdales.com
Buy Now

Halston Women's Ponte Dress

Halston WOMEN'S PONTE DRESS ($159, originally $395)

Halston Cocktail Dresses
from barneyswarehouse.com
Buy Now

Talbots Flounce Refined Ponte Sheath Dress

Talbots Flounce Refined Ponte Sheath Dress ($129)

Talbots Petite Dresses
from talbots.com
Buy Now

Miss Finch Hi-Lo Tie Sleeves Dress

Miss Finch Hi-Lo Tie Sleeves Dress ($52, originally $59)

Miss Finch Hi-Lo Tie Sleeves Dress
$52
from shoptiques.com
Buy Now

Want More?

POPSUGAR Would Like To Send You Push Notifications.