Jay-Z carried his baby daughter, Blue Carter, this afternoon as they got off a helicopter in NYC. Jay and Blue were back in Manhattan after reportedly spending much of August at a rental in the Hamptons. If rumors about their renting a $400,000-per-month pad called Sandcastle are true, Jay-Z, his wife Beyoncé Knowles, and Blue would have been close to their good family friends Gwyneth Paltrow and Chris Martin. Chris and Gwyneth have been hunkering down at their own beach home. Gwyneth and Chris made a rare public appearance together recently at a screening of Jake Gyllenhaal's End of Watch. Jay-Z has his own big project to focus on at the moment with the long-awaited opening of Brooklyn's Barclays Center on the horizon. He championed bringing the sports and music arena to his home borough, and will officially open the space with a string of concerts next month.