Haylie Duff | PEOPLE.com

Pregnant Hilary Duff (in a Bikini!) Cradles Sister Haylie's Daughter Lulu on Her Baby Bump

Haylie Duff Welcomes Daughter Lulu Gray

Maxwell! Boomer! Birdie! See Which Celeb Babies Celebrate Their Birthdays in May

Haylie Duff Shows Off the 'Vintage'-Inspired Nursery for Her Second Daughter on the Way

Hilary Duff Throws Pregnant Sister Haylie a 'Celebratory' Dinner in Honor of Her New Baby Girl

Why Pregnant Haylie Duff Wanted Second Child to Be a Girl (It Has to Do with Sister Hilary!)

Pregnant Haylie Duff Might Think About Marriage After the 'Craziness of a New Baby Dies Down'

Haylie Duff Expecting Second Daughter: 'The Family Is So Excited for the New Baby'

Haylie Duff Expecting Second Child

They're on the Nice List: Celeb Kids Who Met Santa Claus This Holiday Season