06/07/2010 at 01:00 AM EDT
The host, 29, returns for another season on the "inner beauty" reality competition, which debuts on ABC May 31.
HOW WAS FILMING IN LAS VEGAS?
I had to hide out at a different hotel for a month. If the contestants saw me, they'd figure out that they were on True Beauty, not the other show they're told they are competing on! There was a lot of time to kill. I got very good at craps and blackjack.
ARE YOU READY FOR THE BIG 3-0 THIS YEAR?
I thought I'd be married with three kids before I was 25! You have to take things day by day. You can't put time constraints on your dreams.
SPEAKING OF KIDS, DO YOU AND BOYFRIEND NICK LACHEY
PLAN TO HAVE A FAMILY?
Nick and I talk about kids, but we don't talk about when. When it does happen, it will be the right time. I want three or four. And he'll be a great dad.