After remaining mum about her pregnancy for several months, the actress, 30, finally opened up to British Vogue in April.
"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," the resolutely private actress expressed to the mag. "I'm feeling fine...It's all progressing nicely and it's very exciting."
Despite the couple's silence about their new addition to their family, Miller and Sturridge, 26, made no hesitation in stepping out in public on several celebratory occasions.
In May, the couple stole some time away in Portofino, Italy for a babymoon. A week later, they got decked out to celebrate Sturridge's BFF Robert Pattinson's 26th birthday at Gordon Ramsey's restaurant in London, England.