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Fergie, Josh Duhamel

Denise Truscello/WireImage.com

Josh Duhamel has officially transformed Fergie into a wife.

The 33-year-old pop star, whose real name is Stacy Ferguson, and the Transformers/Las Vegas hunk, 36, exchanged vows in a celebrity-packed ceremony Saturday in Malibu, E! News has confirmed.

The "Glamorous" singer looked appropriately, well, glamorous in Dolce & Gabbana.

Guests included the bride's fellow Black-Eyed Peas, including will.i.am, as well as Kate Hudson, Mario Lopez, Slash, Kid Rock, Stacy Keibler and brand new parents Rebecca Romijn and Jerry O'Connell.

Attendees began arriving at the private estate near Zuma Beach around 3:30 p.m., shuttled from a parking lot near Malibu's city hall up to the hillside mansion. The sunset ceremony began about 4 p.m. and lasted about an hour.

Police were positioned outside the grounds, on which a giant large white tent is erected. Several paparazzi-powered helicopted hovered above.

The camera-friendly pair, together since September 2004, have been planning for the big day since their engagement in December 2007, but have spent the past two weeks clearly in preparation mode. The bride was spotted shopping for lingerie, getting facials and working out, and the couple shared a joint bachelor and bachelorette party (followed by a shower) on Wednesday.

This is the first marriage for both.