Mariah in Elie Tahari khakis

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Jesse and Joe trade in Mariah's dowdy duds for chic, new styles! Instead of baggy trousers, Mariah wears a modern khaki by Elie Tahari. The long suit jacket has been replaced by an Armani blazer, which is accented by a wide leather belt.

The white blazer falls just below the hip and makes the rear appear smaller, Jesse says. Now Mariah can stop obsessing about her booty and enjoy her head-to-toe makeover!

Another way to look slimmer instantly? Make sure you're wearing the right bra.