Sienna Miller, 42, gives birth to first child with boyfriend Oli Green, 27

SIENNA Miller has given birth to her first child with boyfriend Oli Green.

The actress, 42, revealed she was expecting her second child last summer while walking the red carpet.

PA

Sienna Miller showed off her baby bump on the red carpet[/caption]

GC Images

Sienna with boyfriend Oli in 2021[/caption]

Sienna was spotted walking with the tot and Oli, 27, in London today.

She is already a mum to her daughter Marlowe, 10, with her ex Tom Sturridge.