Jenna Bush Hager, Barbara and Mila attend Glamour event

The two sisters, both 35, first appeared at Glamour's Women Of The Year summit yesterday in New York. Mila, the oldest of Jenna's two daughters, posed for photos and listened to their talk.

Jenna Bush Hager took her four-year-old daughter along for an empowering ride as she and her twin Barbara promoted their new book.The two sisters, both 35, first appeared at Glamour's Women Of The Year summit yesterday in New York City. Mila, the oldest of Jenna's two daughters, posed for photos with her mother and aunt, and also took a snap on her own, before listening to their talk.Then, Jenna and Barbara visited Fox News' The Five to continue discussing their newly published joint memoir, ...