After the jump a gallery of Irish stars or stars pretending to be Irish for the holiday - Happy St Patrick's Day everyone!
Michelle Monaghan
domnhall gleeson
Anjelica Huston
Mia Farrow
Jack Reynor at the Kids Choice Awards a few years back
Maureen O'Hara, who basically celebrated the holiday the other 364 days of the year, too.
Ruth Negga
Lucille Ball
Andrew Scott - so underappreciated!
June Haver
Carole Landis
Colin Farrell getting grass stains
Saoirse Ronan
Jonathan Rhys-Meyer as Brian Slade in an Velvet Goldmine (1998) album cover foldout