Congratulations are in order Sienna Millerwho has welcomed her second child with partner Oli Green.The actress shared the happy news in an interview with E! News while promoting ‘Jack Ryan: Ghost War’. Speaking about life as a new mum again, Miller revealed: ‘It just happened. I have a little baby next to me. I find it a bit difficult to connect the sentences… I’m getting very little sleep but I’m in love with my baby”.Sienna Miller’s three childrenMiller and her 29-year-old partner, Green, are already parents to a two-year-old daughter. The actress is also mother to 13-year-old daughter Marlowe, who she shares with her ex-fiancé. Tom Sturridge.Sienna Miller shows off her baby bump on the red carpetThe actress announced she was pregnant with her third child during a red carpet appearance at The Fashion Awards in December, where she showed off her baby bump at London’s Royal Albert Hall.It was the second time Miller used a high-profile fashion event to announce her pregnancy. In September 2023, she announced she was expecting her second child at another event, wearing a Schiaparelli ensemble that highlighted her bump.Sienna Miller on her relationship with Oli GreenMiller has opened up about her relationship with Green, admitting that she initially didn’t expect the romance to turn serious. Speaking to Harper’s Bazaar, the actress said: “I didn’t expect to be taken seriously and then quite quickly, I fell in love.”The couple reportedly started dating in 2021. Green, also an actor, has appeared in film and television projects including ‘A Good Person’ with Florence Pugh and Morgan Freeman, and ‘The Crown’ with Imelda Staunton and Dominic West.