Sienna Miller and Tom Sturridge sat outside for a lunch in London's Soho neighborhood. The couple managed to sneak in some PDA while tucking into a meal with two male pals. Sienna covered her baby bump in a loose-fitting denim top, which she paired with leggings. Sienna's among the many pregnant celebrities at the moment, as it emerged in January that she and Tom are expecting a child. Sienna spoke to British Vogue about their plans for a family: "I'm in my second trimester, so I'm I-can-talk-about-it pregnant, even though I'm under strict instructions not to say anything." It's a particularly exciting time for Tom, who's also got a huge movie on the way. His On the Road will be out this Summer, and is rumored to be making a big debut at the Cannes Film Festival in May.