Irresistible! By all accounts, Jessica Simpson looked gorgeous at her weekend wedding to new husband Eric Johnson, and prepared for weeks to be wedding-ready.

A source tells Us Weekly exclusively that the singer-turned-designer, 33, switched up her eating habits in the days before her July 5 nuptials. "Jessica did a vegan diet for about two weeks leading up to the wedding," the source says.

Simpson's vegan kick follows other superstars who have done the same, including Beyonce, Jay Z, and Jennifer Lopez, who dropped a few pounds while on the 22-day vegan challenge.

Looking better than ever with her healthy body toned and strong, Simpson seems to have benefitted from the restrictive diet. She famously lost about 60 pounds while on Weight Watchers earlier this year, after the June 2012 birth of her son Ace.

The vegan munchies weren't the only nutrients Simpson added before she said "I do"-the source tells Us that she "also got quite a few B12 shots."

For her skin, Simpson "opted to get sugar dermabrasion on her face," the source tells Us, adding that she chose sugar over salt "so it would be less harsh."

The second-time bride was just as exacting with her style choices, picking out a custom-made Carolina Herrera gown for her wedding. She wore the speciality number for her vows to Johnson, 34, which took place at the San Ysidro Ranch in Montecito, Calif.

The swanky affair hosted 250 guests, including some familiar faces such as Jessica Alba, Topher Grace, and Donald Faison. Simpson and Johnson are now officially husband and wife, after four years together and the births of their two children, daughter Maxwell, 2, and son Ace, 12 months.

Source: US Weekly

Picture perfect!

Jessica Simpson and Eric Johnson invited more than 250 guests to their lavish wedding ceremony on Saturday, but two in particular stole the show-Maxwell and Ace! A source confirms to Us Weekly that the couple's children didn't only dress for the occasion, they also took part in the ceremony.

Daughter Maxwell, 2, walked down the aisle as a flower girl, the insider reveals to Us. She was accompanied by her cousin, Ashlee Simpson's 5-year-old son Bronx. The bride and groom's 13-month-son Ace, for his part, served as ring bearer for his famous parents' special day. (The newlyweds postponed their wedding twice during Simpson's two pregnancies.)

According to a second source, many women at the bash donned floor-length dresses to the nuptials. Last month, Ashlee told Us her bridesmaid dress was "really beautiful" while attending the E3 Convention in L.A.

The 33-year-old blushing bride-who wore a custom Carolina Herrera gown-and the former NFL player, 34, were feted by boldfaced names like CaCee Cobb and husband Donald Faison, Jessica Alba and beau Cash Warren and Topher Grace as they exchanged vows. During the ceremony, they also chose to play an instrumental version of Chris Isaak's "Wicked Game."

Source: US Weekly