Pippa Middleton is pregnant with her third child

Congratulations are in order for Pippa Middleton and her husband James Matthews.

The couple are reportedly expecting their third child together.

Joining the Duke and Duchess of Cambridge at the star-studded Party at the Palace concert in London on Saturday, Pippa was glowing in a green dress that revealed her noticeable baby bump.

The new arrival is the sixth grandchild for Carole and Michael Middleton and a little cousin for Prince George, Princess Charlotte and Prince Louis.

Pippa and James first became parents in October 2018, when they welcomed Arthur Michael William.

They are also parents to one-year-old Grace Elizabeth Jane.

Pippa followed in the footsteps of her royal sister by giving birth in the Lindo Wing of St. Mary’s Hospital — the same place where Kate and Prince William welcomed all three of their children.

The couple met on holiday in the Caribbean in 2006. They dated briefly in 2012, before rekindling their relationship in 2015 and getting engaged in 2016.

Pippa and James tied the knot in May 2017 at St. Mark’s Church in Englefield.