Kourtney Kardashian held her 5-month-old daughter, Penelope, during a trip to the beach in Miami yesterday. They were joined by Kourtney's boyfriend, Scott Disick, and their oldest child, Mason. Kourtney and Scott welcomed Penelope over the Summer and her birth, like Mason's, was featured on their TV show Keeping Up With the Kardashians. Kourtney is currently in the middle of filming the third season of Kourtney and Kim Take Miami, which premieres in January, with her sister Kim Kardashian. The duo went furniture shopping together before Kourtney changed into casual clothes for her afternoon in the sand. They were apart for the Thanksgiving holiday, though, with Kim traveling back to LA and Kourtney staying in Miami with her family of four.