Jessica Simpson looked Boho-chic at sister Ashlee Simpson's wedding Credit: PacificCoastNews

Matron of honor! Jessica Simpson looked extra blonde and boho-chic in her bridesmaid's attire at sister Ashlee Simpson's wedding to Evan Ross on Sunday, Aug. 31.

Wearing her blonde hair long and down, the fashion designer looked ethereal in a floor-length white lace dress. Topping off the Bohemian bridesmaid look was a small tiara. Jessica, as well as Ashlee's other bridesmaids, carried a mixed bouquet of white roses wrapped in an ivory and lace ribbon. The bridesmaids paired their dresses with heels from Jessica's namesake line.

As previously reported, Ashlee and Evan said "I do" at Evan's famous mother Diana Ross' Greenwich, Conn. estate.

The Weight Watchers spokeswoman's daughter Maxwell, 2, and son Ace, 14 months, were also in the wedding. Little Maxi served as the flower girl while Ace was the ring bearer. Jessica's hubby Eric Johnson also joined the family.

Sticking to the Bohemian theme, Ashlee and her Hunger Games actor hubby added their own style to the evening, using dream catchers, eclectic touches, and a mix-and-match palette.