Mandy Moore at the Hollywood Foreign Press Association Grants Banquet. Print A- A A+ Mandy Moore, once a teen pop star in the same milieu as Hilary Duff, Britney Spears and Christina Aguilera, has since chosen to focus on her acting career and has remained relatively low-key since her public split from musician Ryan Adams. Now 32, Moore is back on the scene with the NBC drama ?This Is Us,? costarring Milo Ventimiglia. She plays Rebecca, a pregnant woman whose life changes after a tragedy.