Heidi & Seal's Arabian 'I do's'

It's official: Heidi Klum and Seal are the most romantic couple in Hollywood! First, Seal proposed to the supermodel in a handmade mountain igloo, and now the couple, who wed in 2005, have renewed their vows for the third time.

"We get married every year at the same place and on the same date," saus Heidi. "It's very romantic."

The sexy couple redid their "I do's" in an Arabian Nights-themed ceremony held May 10 on a remote beach in Mexico's Costa Careyes, near their vacation home. Among the 50 festively dressed guests who joined Heidi 34, and Seal, 45: their children, Leni, 4, Henry, 2, and Jonah 18 months, and Will & Grace star Debra Messing.

"Heidi was dressed head-to-toe in a red Arabian dress, and Seal wore a gray robe," an onlooker tells OK!. "After the ceremony on the beach, the whole group headed to Heidi and Seal's cliff-top home to celebrate."