Hilary Duff swears by THIS one secret hack to help fit in a workout during the hectic holiday season: 'We have so much going on!'

Hilary Duff keeps it casual in frayed blouse and brown sweats as she and husband Matthew Koma enjoy a family day with their kids in Studio City

Hilary Duff reveals how she maintains her 26in waistline during the holidays when food is everywhere

Hilary Duff wears snug black dress and oversized cozy coat as the busy mom-of-three runs errands in rainy Los Angeles