Celebrities that you may no know are Irish! Happy St. Patty’s Day!

Happy St. Patrick’s Day! Niall Horan, Katy Perry and several other stars of Irish descent always celebrate the annual holiday in style, wearing their favorite shades of green to pay homage to their homeland. Check out our gallery full of Irish A-listers!

via Niall Horan, Katy Perry & More Celebrities You Didn’t Know Were Irish — Hollywood Life