Photo: Robert Trachtenberg

By green-lighting reality shows like Pawn Stars, American Pickers, and Ice Road Truckers, she earned History its best ratings ever in 2010. Now she's also working her magic over at Lifetime.

Adam Says: "When springing for pricier separates, make sure they go with at least four other items in your closet."

"Solids can be worn more often than distinctive prints. Put your money on timeless clothes that fit your figure brilliantly."

Nancy Says: "I didn't know I had a style—I'm usually just trying to get out of the house without Cheerios on me," says Dubuc, a mother of two. But she's learned to be more "strategic and thoughtful" about her purchases, choosing well-made pieces in solid colors that will take her to meetings on both coasts. This dove gray linen suit jacket and ruched jersey pencil skirt will feel modern for years, especially matched with simple pumps, like this patent leather pair by Yves Saint Laurent. "I'm 511, so I wasn't always a fan of heels," she says. "But a lot of people in my life are telling me to put them on."

Landing the Deal
"My job is to rally the troops to craft a vision, then let them do their thing. It feels great to get a project before your competition."

Suit jacket and pencil skirt, both Donna Karan New York, skirt, $795. Watch, Tag Heuer. Ring, Rarities by Carol Brodie.

Next: The power color that works as a neutral for day and night