First ladies have long been known for boxy suits, classic colors and ultraluxe pearls. But not Michelle Obama. As she moved into the White house this week and twirled her way through inaugural balls, the style agenda was clear: young, trendy and extremely new.

"Michelle's not someone who wants to be trapped in a box wearing a suit and sensible heels," Robin Givhan, longtime fashion editor for The Washington post, tells Life & Style. "Her clothes represent a generational shift."

For more on Michelle Obama's stunning sense of style, pick up Life & Style's special inauguration issue, on newsstands now!

Photo Credit: Courtesy of HBO