The 25-year-old actress, who married actor Ryan Reynolds in a surprise ceremony in Mount Pleasant, South Carolina, last month, collaborated directly with Marchesa designer Georgina Chapman to ensure she walked down the aisle in her dream dress, reported Us magazine.
"Blake has such an innate style. I've worked with her so many times and know her so well," Georgina said.
The blonde star, who is well known for her love of fashion, wore a custom-made beaded gown featuring a silk tulle bodice and rose-gold embroidery.
The Marchesa designer praised Lively's sense of style.
"She has a very clean sense of fashion. She was very involved. She was a creative bride with a clear vision of what she wanted," Georgina added.