Sienna Miller and her boyfriend Oli Green have reportedly welcomed their first child together!

The 42-year-old actress and 26-year-old actor were seen in photographs with their newborn baby in pics snapped on Wednesday (January 3).

Keep reading to find out more…

We know that their baby is a girl as she accidentally revealed the child’s sex in an interview last month. You can see the pics at DailyMail.com.

This is the first child for the couple and the second child for Sienna, who shares a daughter Marlowe with her ex Tom Sturridge.

Congratulations to the happy couple on the wonderful news of their newborn baby girl! You can see what Sienna recently said about their age gap here.

We’ve reached out to reps for comment and are awaiting further comment.