Sienna Miller wearing nude outfit in March 2011Sienna Miller has reportedly given birth according to news reports. The 30-year-old actress is said to have welcomed her first child over the weekend with fiancé Tom Sturridge.

US Weekly reports that Sienna gave birth in London, but no other details have been released. At this stage there is no confirmation on what gender the baby is or what the couple have named their new bundle of joy.

The actress/fashion designer revealed she was pregnant in January, shortly after she and her sister, Savannah Miller, announced they were stepping down from their fashion label, Twenty8Twelve. Although both denied the reason they were leaving the brand they founded six years prior was because of their growing families.

"Just for the record we didn't step down at Twenty8Twelve because of our babies," Savannah tweeted at the time.

Sienna graced the April cover of Vogue UK magazine and shared her excitement over becoming a mum for the first time. "I'm feeling fine," she told the glossy. "It's all progressing nicely and it's very exciting. It's nice to start a new decade."

And it seems she isn't the only starlet to have a baby over the weekend. Can you guess who else gave birth? More details coming up on Catwalk Queen soon so stick around peeps!