Sienna Savannah Miller Wimbledon.jpgWe are all full of baby news at the moment. First Peaches, then Beyonce and now Sienna?

Word on the grapevine is that Sienna Miller is expecting her first baby with boyfriend Tom Sturridge. The 30-year-old actress reportedly broke the news to her family and friends just prior to Christmas.

US reports are conflicting over whether the couple, who have been dating for just over a year, are also engaged. Some publications are alleging that Tom proposed to Sienna in Paris over the Christmas season.

Meanwhile, Sienna's sister and fashion business partner Savannah Miller recently tweeted: "THRILLED".

Although it's not quite clear what exactly she is thrilled over. Neither Sienna or Tom have confirmed or denied the news that they are pregnant.

Sienna split from Jude Law back in February. The couple ended their relationship for the second time after initially going their separate ways in 2006.