The 27-year-old country crooner and "American Idol" champ chose famed bridal designer Monique Lhuillier for both her ceremony dress (a long ball gown) and her shorter and sexier reception frock, which she paired with a sparkly headband by ban.do.
The two-year-old L.A.-based company that specializes in stand-out headpieces, favored by celebs including Taylor Swift, Johnny Weir, and Zooey Deschanel, customized a headband for the singer's wedding.
Underwood's chic topper consisted of a sweeping, cream-colored feather, elements from vintage brooches and earrings, and strands of Swarovski-crystal.
Although Underwood's version is a $695 one of a kind, brides-to-be on a slimmer budget can copy her look by heading over to shopbando.com's bridal section, where they'll find headpieces made of silk flowers, feathers, sequins, and bows ranging from $95 to $225.
We think Blair Waldorf would approve.
In other wedding news, read what Penélope Cruz wore to exchange vows with Javier Bardem.