Kate Middleton: Pregnant St. Patrick's Day Parade with Prince William!

Catherine, Duchess of Cambridge (aka Kate Middleton) hands out shamrocks to the Irish Guards at Mons Barracks during the St Patrick’s Day military parade on Sunday (March 17) in Aldershot, England.

The 31-year-old pregnant royal was joined by her husband Prince William who helped her when she got her heel caught in a street drain.

PHOTOS: Check out the latest pics of Kate Middleton

A few days earlier, William and Kate made a surprise appearance at the final day of the Cheltenham Festival in Cheltenham.

45+ pics inside of Kate Middleton and Prince William on St. Patrick’s Day…