The nuptials took place at sunset under a mountainside tent at the Staglin Family Vineyards in Rutherford, Calif. The singer walked down the aisle in a Christian Lacroix gown; her bridesmaids wore dresses by Stevie Wonder's wife, designer Kai Milla.
Bride and groom exchanged wedding bands by London-based jeweler Stephen Webster, who also created Aguilera's five-carat, diamond-and-platinum engagement ring.
The wedding festivities began Thursday and included a lavish Friday-night rehearsal dinner at the Auberge du Soleil resort. Aguilera and Bratman had asked guests to make donations to Hurricane Katrina and Rita relief efforts. On Sunday, a day after the nuptials, the newlyweds were spotted shopping and smooching in nearby St. Helena, Calif.
"When I got to the last box, there was a ring in it," Aguilera told PEOPLE at the time. "He got down on one knee and said, 'Will you do me the honor of being my wife?' I've been floating ever since."
"Christina was very surprised," a close friend of Aguilera's told PEOPLE at the time of the engagement. "She's ecstatic."
In April, the pair threw a party in Santa Monica to celebrate their upcoming nuptials – the groom-to-be even carried his fiancée over the threshold of the restaurant – and their families met for the first time. Tables featured rose petals and mini wedding cakes.
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In July, Aguilera picked out her wedding dress during Paris Fashion Week, and, on Oct. 28, she and Bratman held a joint bachelor-bachelorette party at the Hard Rock Hotel & Casino in Las Vegas.
The couple met in 2002, when Bratman worked for her management company, AzoffMusic Management. This is the first marriage for both.