Pose for photographers before leaving for their home at nearby Kensington Palace. Kate, who wore a yellow-and-white floral shift dress by British designer Jenny Packham, held the sleeping baby wrapped in a white shawl.

The couple looked relaxed but didn't answer any questions. William earlier told reporters he was "very happy" as he brought young George to the hospital to meet his baby sister. George, looking slightly alarmed by all the cameras, waved dutifully at the adoring crowds.

The queen and senior royals were "delighted with the news," officials said. The queen marked the occasion by wearing a pink