By Michelle Tauber
December 05, 2005 12:00 PM

If Christina Aguilera experienced any wedding-day jitters on Nov. 19, she certainly didn’t show it. Primping in her 1,800-sq.-ft. suite at the Auberge du Soleil resort overlooking California’s Napa Valley, the singer was flat-out giddy. “They were playing girlie pop music and having tons of fun,” a source says of Aguilera and her bridesmaids, who wore matching pink sweatsuits (the bride’s was white). “There was a lot of giggling as if they were getting ready for the night of their lives.”

The night didn’t disappoint. Estimated to have cost $2 million, the wedding of Aguilera, 24, and music executive Jordan Bratman, 28, was “simply spectacular,” says an observer at the event, which had everything from a chandelier crafted from 2,500 crystals to a five-tier chocolate cake topped by hundreds of sugar flowers. The nuptials, at the Staglin Family Vineyard in Rutherford, Calif., capped three days of festivities, including wine tastings and a Japanese rehearsal dinner. “It was an incredible weekend,” says another source. “Everyone was blown away.”

Of course, the main attraction was the betrothed couple. Aguilera, carrying a diamond rosary and a single red rose that matched her lipstick exactly, walked the aisle to “Ave Maria.” After a 30-minute nondenominational ceremony in a tent with hand-painted stars on the ceiling, the 120 guests—including Aguilera pal Sharon Stone—showered the new married couple with rose petals. The ecstatic bride was resplendent in a form-fitting white satin gown by French couturier Christian Lacroix. “She’s so lovely,” says a source close to the couple. “He seems to have had a good influence on her.”

The pair, who met in 2002 when Bratman worked for Aguilera’s management company, had been planning their elaborate nuptials since their engagement last February. After the ceremony the party moved through a passage adorned with autumnal flowers, then into a wintry reception tent brimming with frosted-white roses, silver drapery and dangling crystals. Says an attendee: “You could only gasp.”

And cut loose. As the 17-piece Movement Orchestra played songs like Marvin Gaye’s “Got to Give It Up,” “everyone was hitting the dance floor hard for hours,” says a source. The bride sang two songs for her groom, including her sexy hit “Lady Marmalade.”

The good times continued the next afternoon, when the newlyweds shopped in nearby St. Helena. “They were holding hands and in a great mood,” says a witness. “They seemed thrilled to be married.”

Michelle Tauber. Ulrica Wihlborg, Lycia Naff and Brenda Rodriguez in Napa Valley and Mike Fleeman in L.A.