Los Angeles:
The G.I. Joe: Rise of Cobra actress is expecting her first child with boyfriend Tom Sturridge and says entering a new phase of her life is the perfect way to mark turning 30 last December.
She said: "I'm feeling fine. It's all progressing nicely and it's very exciting. It's nice to start a new decade."
Although she is excited about being pregnant, Sienna doesn't want to speak too much about it because she fears it will jeopardise her chances of keeping her personal life private.
She added in an interview with the new issue of Britain's Vogue magazine: "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 as it would completely defeat the point of everything I've tried to achieve in the last eight years."
Sienna started dating The Boat That Rocked actor Tom - who is friends with Robert Pattinson - just a few months after she split from fiance Jude Law for a second time in February 2011.
It has been claimed she and the actor are engaged, but she has not confirmed the speculation.
She said: "I'm feeling fine. It's all progressing nicely and it's very exciting. It's nice to start a new decade."
Although she is excited about being pregnant, Sienna doesn't want to speak too much about it because she fears it will jeopardise her chances of keeping her personal life private.
She added in an interview with the new issue of Britain's Vogue magazine: "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 as it would completely defeat the point of everything I've tried to achieve in the last eight years."
Sienna started dating The Boat That Rocked actor Tom - who is friends with Robert Pattinson - just a few months after she split from fiance Jude Law for a second time in February 2011.
It has been claimed she and the actor are engaged, but she has not confirmed the speculation.
