Michael Sheen, Anna Lundberg welcome first child together

Michael Sheen and actor girlfriend

Anna Lundberg

are proud parents to a baby girl. According to an American celebrity magazine, the couple have welcomed their first child together.

Although they are yet to officially announce the birth, reports say they welcomed a baby girl. Sheen teased their child's birth on Twitter on Wednesday.

"Nobody, not even the rain, has such small hands,

E E Cummings

," he shared. This is a second child for Sheen, who also shares daughter Lily (20) with former partner, actor Kate Beckinsale.

He announced their pregnancy in July.