The news comes just hours after Life & Style magazine revealed the Alfie star is pregnant.
A source now tells the publication, “They’re engaged and really happy. Her family is happy, as they absolutely adore Tom.
“He proposed to Sienna during their romantic trip to Paris after Christmas. He filled their hotel suite at the Ritz with flowers and presented her with a vintage Victorian ring. It was incredibly romantic (and) she was blown away.”
Miller had a seven-year on/off romance with actor Jude Law, which ended for good last year (11). Sturridge has been linked to actresses Camilla Belle and Carey Mulligan.
The couple is expecting its first child in June (12).
Publicists for both Miller and Sturridge have yet to confirm the the reports the pair is set to wed, but the actress’ sister Savannah appears to have confirmed the star is pregnant.
When a fan reached out to Miller’s sibling on Twitter.com on Friday (06Jan12), with the message, “no greater feeling than welcoming a new life into the world in the comfort of home,” Savannah thanked her for her well wishes.