Celebrities on St. Patrick's Day | Pictures

St. Patrick's Day was yesterday, and we're taking a look at celebrities who have taken part in the fun holiday festivities over the years. Kate Middleton and Prince William kicked off the Irish celebrations this year when they attended a parade in England, while Ben Affleck spent the holiday at the park with a dressed up Seraphina and Samuel. In year's past, Jessica Simpson and Eric Johnson got into the spirit with a couple's outing LA, and Reese Witherspoon sported emerald for a St. Paddy's Day jog. Click through to get a look at other stars hosting parties, attending events, and looking lucky on St. Patrick's Day!

Source: Getty, Bauer-Griffin Online, Pacific Coast News Online, INFDaily.com, AKM-GSI, WENN.com, and FameFlynet