The Duke and Duchess of Cambridge spent their first night away from baby son Prince George to attend a black-tie awards ceremony, with William joking that the pair might nervously glance at their phones "to check all is well back home."
William and Kate were guests of honour at the inaugural Tusk Trust awards, a ceremony championing wildlife conservationists, which was held at the Royal Society in central London.
Gabon President Ali Bongo Ondimba asked Kate who Prince George took after, to which she responded: "Like most babies, he's got a mix of both of us."
In a speech to guests, William said: "As you might have gathered, Catherine and I have recently become proud parents - of a baby who has a voice to match any lion's roar.
"This is actually our first evening out without him, so please excuse us if you see us nervously casting cheeky glances at our mobile phones to check all is well back home."