The 'Mad Men' actress took to her Twitter account on Saturday to announce that she and her husband James Conran have welcomed a daughter - their first child together - into the world and have named her Ioni James Conran.
She tweeted alongside a photograph of the tiny tot:
Alongside a picture of the three of them at hospital, he said:
he shared a photograph of the brunette beauty in hospital.
He captioned it: "#BabyConran has come a long way but her biggest
journey is about to begin."