My Houzz: A Basketball Court, a Rooftop Kitchen and More in Manhattan

Out of seven children, twin daughters Bellamy and Tallulah hold their own as the only girls in the bunch. When recent renovations included installing the elevator, all rooms needed to be slightly reconfigured. "Our girls are getting older so we were happy to bring in something new and redecorate", says Cortney. Now into their teens, the girls have redone their bedroom to reflect their growing sense of style and independence. Above Tallulah's bed hangs a childhood portrait of her by Linda Mason. The upholstered bed frames are a recent purchase that add a decidedly feminine air to the space, while a brightly painted chair and striped draperies maintain a youthful punch. Even with two designer parents, the girls are free to weigh in on what goes into their room. "It is definitely a collaboration", Cortney explains. "[Our daughter] Bellamy really enjoys designing and has a natural talent for it. All of our kids bring their own artistic sense into their spaces, after all, we want their spaces to reflect them, too." Bed frames: Pondicherry Bed in Celery Jaipur, Serena and Lily Photo: Adrienne DeRosa Photography © 2014 Houzz Design: Cortney and Robert Novogratz