Sienna Miller is reportedly going to be a mom.
The actress and her boyfriend, actor Tom Sturridge, are expecting their first child together, according to Internet reports.
A rep for Miller did not reply to PEOPLE’s request for comment. A rep for Sturridge had no comment.
While the actress’s sister Savannah Tweeted, “THRILLED” and “Thank you x,” she later wrote that it was in response to the arrival of her own baby, born in November, rather than rumors about Miller’s pregnancy.
The actress, 30, and Sturridge, who has appeared in Pirate Radio and Being Julia, were first spotted together last spring.
Miller also dated Jude Law off and on, but the former couple split in February of last year.