Pippa Middleton is pregnant! Spotted with baby bump at Jubilee concert

Pippa Middleton is ready to welcome a new baby!

Spotted at the star-studded “Party at the Palace” concert in London Saturday, the sister of Kate Middleton was adorned with a visible baby bump.

A source told Page Six that the couple is “so happy” and Pippa is a “natural mama.”

Pippa is married to a hedge fund manager James Matthews.

Kate's sister joined alongside Prince Charles, Prince George, Princess Charlotte, Princess Anne and Prince Edward for the star-studded concert including Diana Ross, Elton John, Duran Duran and Rod Stewart.