Pippa Middleton is All Smiles After Sister Kate Middleton's Royal Baby News!

Pippa Middleton says goodbye to a friend and smiles for onlookers as she steps out on Thursday (September 11) in London, England.

The 31-year-old younger sister of the Duchess of Cambridge stepped out for the first time since her big sis’ pregnancy news!

Prince William and Kate Middleton are expecting their second child sometime next year – unfortunately, the Duchess is experiencing Hyperemesis Gravidarum, a form of severe morning sickness which she also experienced during her first pregnancy. We hope the Duchess feels all better soon!

10+ pictures inside of Pippa Middleton out in London with a smile…