Sienna Miller has shared the first photos of the two children she shares with her fiancé Oli Green.

The actress, 44, made a low key announcement in May that she had welcomed her third child, simply saying: 'It's happened. I have a tiny baby next door.'

On Wednesday she posted photos of their whirlwind first few weeks as a family, under the caption 'Adulting.'

The snaps show a blissful Sienna cuddling her newborn in hospital after the birth. The couple are yet to reveal her third baby's sex or name.

She also shared her first photo of the two-year-old daughter she shares with Oli, posting a sweet snap of her toddler's curly hair.