Michelle Obama’s oh-so-famous Inaugural Ball gown has been donated to the Smithsonian and will be unveiled in an exhibit tomorrow. The white, one-shoulder gown turned heads; launching a new fascination with first-lady fashion, as well as an obsession with bare arms. On the eve of the unveiling, MSN put together some interesting facts about previous first ladies and their Inaugural choices.

Mamie Eisenhower donned a pale pink gown and accessorized with a matching pearl-covered purse (3,456 pearls to be exact).

Perhaps one of the first White House fashionistas, Jackie Kennedy helped to design her own Inagaugural gown. While Kennedy’s successor, “Lady Bird” Johnson ordered her gown from a department store.

Pat Nixon re-used her Inaugural gown and wore it to numerous other White House events! Another repetitious wearer, Rosalynn Carter wore the same gown to her husband’s gubernatorial inauguration and to the presidential one a few years later. Nancy Reagan also got dual usage out of her Inaugural gown before donating it.

Barbara Bush loved her gown so much that she had a hard time giving it away!

Hilary Clinton went with a hometown designer for Bill’s first inauguration. Laura Bush did the same for George’s first.