Who is Matthew Koma? Meet Hilary Duff's husband as pair announce third child together

Pregnant Hilary Duff showcases her growing baby bump after announcing she is expecting her fourth child: 'Been trying to hide this thing for a minute'

Hilary Duff proudly shows off her growing baby bump in a black turtleneck in LA... after revealing she is expecting FOURTH child

Hilary Duff Does Some Shopping in L.A. After Announcing Fourth Pregnancy