A trio of dresses from Lauren Conrad's collection.

“Vow to Be Chic,” a designer rental site created by a serial bridesmaid, has added Lauren Conrad’s Paper Crown collection to its roster. The former reality TV star, who also designs LC Lauren Conrad, a lower-priced line for Kohl’s, revealed on Jan. 1 via Instagram that she’s expecting her first child with husband William Tell.

Kelsey Doorey, founder and chief executive officer of Vow, said the site is pleased to be working with Conrad and her business partner, Maura McManus, and praised the collection for its mix of “boho and modern designs” and its fabrics and fit.

 The web site will carry three Paper Crown styles, including a full-length version of Jeannie, which has a chiffon overlay and skirt and is exclusive to Vow; Mandi, with a soft ruffle on the double-V neckline and full column skirt, and Natalie, a draped number that can be worn with or without its matching sash. The dresses — which come in two colorways: Silver Peony, a shade of blush, and Spiced Wine, a deep red — can be rented for under $99 each. Paper Crown gowns retail from $225 to $325.

“No longer do bridesmaids have to spend $300-plus on a dress in a random color or style that they’ll never wear again,” Doorey said. “No more tacky, unfashionable options. We’ve all seen ’27 Dresses’ and sometimes we don’t agree with the bride’s style choices.”

Vow to Be Chic dresses arrive in two sizes two weeks before the wedding.