Sienna Miller & Tom Sturridge Welcome a Baby Girl!

Congratulations go out to Sienna Miller and Tom Sturridge!

The happy couple are new parents to a baby girl, according to E! Online. Sienna gave birth to a daughter — the pair's first child — in London over the weekend. So what's her name? 

OK! GALLERY: SIENNA MILLER FLAUNTS HER BABY BUMP IN A BOHEMIAN DRESS IN LONDON 

Marlow! Don't you love it? 

Sienna and Tom — who happens to be best friends with the one and only Robert Pattinson — got engaged in Paris over the Christmas holiday and are thrilled to become first-time parents. 

OK! NEWS: SIENNA MILLER COVERS BRITISH VOGUE AND TALKS PREGNANCY: "IT'S VERY EXCITING" 

Great newS for the couple — welcome to the world, Marlow!