And Mandy Moore celebrated a week with her newborn son August Harrison on her Instagram page this Saturday.

She gave birth seven days ago: And Mandy Moore celebrated a week with her newborn son August Harrison on her Instagram page this Saturday.

In recent years she has been starring on the tearjerker TV show This Is Us and joked in the caption of her new baby picture: '#thisisgus.'.

Aglow: In recent years she has been starring on the tearjerker TV show This Is Us and joked in the caption of her new baby picture: '#thisisgus'.

Mandy gave birth last Saturday and has since revealed on Instagram how she and her husband decided to name the baby August

The caption was accompanied by a picture of a little grey baby blanket with the words 'AUGUST' stitched onto it

Birth announcement: Mandy gave birth last Saturday and has since revealed on Instagram how she and her husband decided to name the baby August