Kate Middleton is back in action at the St. Patrick's Day Parade with the Irish Guards! See the best photos from her day out, which marked a royal first.

Britain's Princess Kate attends a St Patrick’s Day parade in central London:: London, England::4Kate handed out traditional sprigs of shamrock to members of the Irish Guards and enjoyed a half-pint of the famous Guinness stout.

Princess Kate participated in a beloved St. Patrick's Day tradition Monday after missing the event last year due to health issues. Kate attended the Irish Guards' annual St. Patrick's Day parade Monday in London, an event she's attended regularly since 2012, making her absence at last year's parade stand out.