The couple, who met in 2010 while filing season 12 of "Big Brother" and later appeared on season 13 of the show and "The Amazing Race," married Saturday at the AT&T Center, People magazine reported.
"She wanted to arrive like a big celebrity," celebrity wedding planner and host of WE tv's "My Fair Wedding," David Tutera said before the wedding. "The guests will watch her arrive on live camera before she walks down the aisle, which to me is one of the most over the top processionals ever."
Tutera said Reilly's floor-length, silver-sequined Missoni gown was "not at all a bridal gown."
"She's more comfortable in evening wear that you would wear down a red carpet than a white carpet," he said.
Reilly and Villegas' wedding will be featured on the Dec. 15 season finale of "My Fair Wedding: Unveiled."