Vanessa Minnillo isn't falling prey to extreme body pressure before her wedding later this year to her beau of five years, The Sing-off's Nick Lachey.

"I want him to see the girl he fell in love with," the 5-foot-7 stunner tells Us Weekly of skipping crash dieting in favor of a five-meal-a-day delivery service. "I want to stay true to who I am, but, you know, a better version."

That's where her trainer, Gunnar Peterson, comes in. Minnillo, 30, works with the pro for an hour three times a week. He trains me like an athelete," she says of doing agility drills and complex strength-training moves. "When I started, I remember t hinking, Ugh, I'm trying to win the Super Bowl!" But now I like it.

Check out the video above for a behind-the-scenes look at the bride-to-be's photo shoot for Us.