Hilary Duff Recalls Her Son Falling Asleep at a Justin Bieber Concert (Exclusive)

Hilary Duff chats with ET’s Cassie DiLaura at the celebration party for the season one finale of ‘How I Met Your Father.’ The actress shares her excitement for the fans to see what surprises the show has in store for the final episode this season. Duff opens up about her latest adventures in parenting, such as taking her son to a Justin Bieber concert and her kids rocking out to songs from her own discography! ‘How I Met Your Father’ streams on Hulu.