Heading into Labor Day, celebs and their babes were soaking up the final days of Summer. Both Molly Sims and Ivanka Trump headed to the beach with their little ones, while Debra Messing and crew hung by the pool. But some of the happiest moments of the week over Instagram and Twitter was the news of new arrivals. Rock star duo Fergie and Josh Duhamel as well as singer Michael Bublé and his wife proudly became parents to baby boys. Click through now to see this week's cutest candids, and don't forget to follow POPSUGAR Moms on Instagram!