Hilary Duff shares intimate snaps and videos as she commemorates fourth anniversary with husband Matthew Koma

Hilary Duff and Matthew Koma: A Breakdown of Their Love Story and Blended Family

Hilary Duff’s Kids: Meet Her Three Children Amid Her Recent Pregnancy Announcement

Pregnant Hilary Duff covers bump in black sweater as she steps out in public for first time since announcing she's expecting her fourth child