IN CASE YOU MISSED IT: Sienna Miller welcomes third child.

The American-British actress has revealed that she and her actor boyfriend, Oli Green, have welcomed their second child together, her third. Sienna, 44, made the announcement during a new interview with E! News. "It's happened," she stated. "I have a tiny baby next door." Giving an insight into life as a mum to a newborn again, the American Sniper star admitted she is running on "very little sleep".