Pippa Middleton was all smiles as she walked through London on Friday. The 34-year-old — who is expecting her first child with husband James Matthews — gave a glimpse of her growing belly in gym gear. Pippa's exciting news broke just days before her older sister, Kate Middleton, gave birth to her third child; shortly after Prince Louis was born, Pippa was seen heading to Kensington Palace to visit her newest nephew. While Pippa has yet to confirm her pregnancy news, she did have quite the glow when she attended Prince Harry and Meghan Markle's royal wedding last weekend. Keep reading to see Pippa (and her bump)!