NewsgalleryRoyals in Hounslow for Paddy's Day ParadeBookmarkShareNewsByKatherine ClementineContent Editor16:40, 17 MAR 2018Updated16:47, 17 MAR 2018Prince William enjoys a Paddy's Day Guinness while pregnant Kate sticks to water (Image: PA)1 of 11Irish Guards during the regiment's St Patrick's Day parade at Cavalry Barracks in Hounslow (Image: PA)2 of 11Irish Guards mascot, Irish Wolfhound Domhnall gets ready for the regiment's St Patrick's Day parade (Image: PA)3 of 11Cheers! (Image: PA)4 of 11The Duchess of Cambridge attends the regiment's St Patrick's Day parade at Cavalry Barracks (Image: PA)5 of 11Kate Middleton enjoys the St Patrick's Day parade in Irish-themed attire (Image: PA)6 of 11Kate presents the 1st Battalion Irish Guardsmen with shamrocks (Image: Getty Images Europe)7 of 11The Duchess of Cambridge attends the regiment's St Patrick's Day parade at Cavalry Barracks in Hounslow (Image: PA)8 of 11The Duke and Duchess of Cambridge pose for a photograph with officers and guardsmen of 1st Battalion the Irish Guards (Image: PA)9 of 11All smiles from the Duke and Duchess of Cambridge (Image: PA)10 of 11The Duchess of Cambridge presents a shamrock to Irish Guards mascot, Irish Wolfhound Domhnall (Image: PA)11 of 11