People.com: She's won seven Olympic medals and flaunted her toned figure in magazines from Playboy to PEOPLE's 2008 World's Most Beautiful issue. Now Amanda Beard has two new reasons to celebrate: She just got hitched - and is nearly 5½-months pregnant with her first baby, the swimmer tells PEOPLE exclusively.

"It was absolutely perfect," Beard, 27, says of her May 1 wedding to photographer Sacha Brown, 34, on Wakatobi, an archipelago in the Banda Sea off southeastern Indonesia. "It was stress-free, and super low-key."

The couple said "I do" in a brief sunset ceremony on a private beach at their resort. Presiding over the nuptials was a local elder, and the only witnesses were villagers from the area - none of whom spoke English.

"I've always said, 'I want to get married barefoot on the sand,' " says Beard. And she did. But following local custom, both bride and groom adhered to Muslim tradition and covered much of their bodies for the ceremony. She wore a black, long-sleeved tunic, a sarong and a white veil, while Brown also wore a sarong ("A long, manly sarong," Beard jokes. "He felt he looked like Aladdin!"), a hat - and a sword.

Read more hot stories Moms Are Talking About.