Sienna Miller recently revealed that she's expecting her first child with boyfriend Tom Sturridge. Last night, she revealed her tiny bump for the first time at a party thrown by W Magazine editor Stefano Tonchi in New York. Sienna was wearing a long, black dress with a subtle slit by Boss Black with Pamela Love jewellery. I love this look on Sienna and am so excited about her pregnancy. Do you like this look on her? Photos: Getty