Pop’s most unpredictable princess pulled off the surprise wedding of the year, Saturday, and "Extra" was with newlyweds Britney Spears and Kevin Federline just hours before and then after the hush-hush ceremony.

Friday night found Kevin and pals swarmed by paparazzi as he left his bachelor party at Houston’s restaurant in Santa Monica. And by 3 o’clock Saturday afternoon, a newly-brunette Britney was braving her own flashbulb frenzy as she arrived in Santa Monica for a pre-wedding spa appointment.

At 5 pm, the "chopperrazi" were buzzing Britney’s Santa Monica hotel as police stood guard. Twenty family members and friends were staying at the Fairmont Hotel in Santa Monica, preparing for the dinner -- but instead of dinner, the guests were shuttled to a modest private home in Studio City, belonging to the groom’s tailor. At 7:30 p.m., the quickie ceremony started and lasted five minutes.

Spears wore a strapless white dress and Federline sported a tuxedo while they exchanged their vows. Afterward, the bridesmaids, who included Britney's little sister Jamie Lynn, slipped into pink sweats. The groomsmen also donned sweat suits, stenciled with the word "Pimps" on the back. The couple and their guests then partied the night away at a Hollywood hot spot.

People Magazine’s Senior Editor Jess Cagle says the wedding took everyone by surprise: "She didn’t tell her mother, she didn’t tell her sister. They showed up thinking she was going to an engagement party, and surprise." But at Sunday night’s Emmy Awards, Spears certainly had her share of supporters. "It’s great," Ellen DeGeneres said. "She’s a young girl looking for love. I just think we should give her a break."

These are the pop princess' second nuptials in nine months. Spears married childhood friend Jason Alexander June 2nd in Las Vegas, but annulled their marriage three days later. Kevin and Britney announced their engagement in June. There’s already talk about a pre-nup. Reports are that the pop diva’s mom insisted Britney get one to protect her $130 million fortune.

And only "Extra" has your exclusive first look at the bridesmaids’ wedding gift bags. Spears gave each one a Bolsa camouflage duffel bag with the Hebrew words, "Power to heal," inscribed. The bag also had a keychain with the newlyweds’ picture on it.