“It’s so hard to choose the dress,” she tells PEOPLE, which features exclusive photos and details from the couple’s special day in this week’s issue.
To help her along, the bride turned to longtime friend and designer, Giambattista Valli. “I was really comfortable talking to him about something really important like this,” says the actress, 30.
Ultimately, Valli created a custom petal-pink strapless gown of silk mousseline and silk organza with a light-pink floral motif that “was whimsical and dramatic,” says Biel. Her wedding look also included a heartfelt detail: Her floor-length veil was adorned with pearls from her grandmother’s wedding day tiara.
Valli also outfitted Biel’s four bridesmaids along with her mom, Kim, and Timberlake’s mother, Lynn Harless, for the big day.
As the reception rolled on into the wee hours, Biel changed into a silk shantung and macrame lace strapless dress from Valli’s spring collection.
For more about Biel’s fantasy wedding gown — and to hear Timberlake’s reaction! — pick up this week’s issue of PEOPLE, on sale Friday.