St. Patrick's Day has arrived, and we're celebrating with a look at celebrities who have taken part in the fun holiday festivities over the years. For previous celebrations, Katy Perry showed her Irish pride with a leprechaun hat, Jessica Simpson and her fiancé, Eric Johnson, had a festive day out, and Michelle and Barack Obama had a great time in green. Keep scrolling to get a look at other stars hosting parties, attending events, and looking lucky on St. Patrick's Day!
Stars Show St. Patrick's Day Spirit!
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