Vanessa Minnillo and Nick Lachey were married Friday in an island ceremony they said was a surprise even to their 35 guests.
"Nobody knew where they were going," Minnillo told the celebrity news Web site.
Minnillo is the new host of "Wipeout."
Lachey, who is also a singer, is the emcee for "The Sing-Off."
People.com said the couple's vow-exchange was taped as the special "Nick & Vanessa's Dream Wedding," which is to air July 30 on TLC.
Lachey and his ex-wife Jessica Simpson starred together in "Newlyweds: Nick and Jessica," a reality show that ran from 2003 to 2005.