US Weekly reports that Sienna Miller and boyfriend Tom Sturridge are expecting their first child together, though the actress has yet to confirm that she's pregnant.

Miller, 30, and Sturridge, 26, have been together for a year, and reportedly have no plans to marry.

'They're really good together.'

According to a source with US Weekly, Miller and Sturridge are expecting a baby in 2012, and that friends and families were overjoyed by the news.

[Friends and family] are not surprised by the news, said the source. They're really good together.

Friends are really happy with her [Sienna's] relationship with Tom, the source continued. He's younger, yes, but he's mature and he's a good guy.

Miller's Family Has 'Had It With Jude Law'

Sienna Miller's rep could not be reached for comment, and Tom Sturridge's declined to answer whether the pregnancy rumors were true, saying they don't comment on our client's personal lives.

The US Weekly source, however, didn't say outright that Sturridge was the baby's father, leading to rumors that ex Jude Law, with whom Miller has had a series of reconciliations.

Though Miller began dating Sturridge a year ago, she and Law, 39, got back together last February after an initial split in 2006. The couple had been dating two years when Law admitted to cheating on Sienna with his children's nanny.

If Miller's family is any indication, however, any chance that Law is the father of Miller's baby disappeared before she began dating Sturridge, with reports that her relatives had had it with Jude Law and his cheating and all the back and forth.

Robert Pattinson as Godfather?

But if a baby is in Sienna Miller's future, being pregnant with Tom Sturridge's child doesn't mean there will be wedding bells in the couple's future.

[Miller and Sturridge] don't have plans right away to marry, if at all, the US Weekly source reported.

A more pressing question is what role Miller and Sturridge's friends might play in their baby's life, especially Sturridge's pal Robert Pattinson.

Pattinson and girlfriend Kristen Stewart were spotted on a double date with Miller and Sturridge back in September, and the two actors are reportedly very close friends.

If the Sienna Miller pregnancy rumors are true, might Robert Pattinson become a godfather? News sources and fans of Miller and Sturridge will have to wait and see.