Mary-Kate Olsen Celebrates New Year's in April

Mary-Kate Olsen (in vintage Missoni) drowns herself in a glittery pastel floor-grazing gown at the “New Year’s In April: A Fool’s Fête” at the Mandarin Oriental hotel in New York City on Wednesday.

The 21-year-old mini-mogul accessorized with a yellow clutch and a monstrous-sized headband.

The celebrated event was run by the non-profit organization, New Yorkers For Children. Their mission is to improve the lives of children and families by increasing the private sector’s awareness of child welfare issues.