Halloween 2016: Newsmakers, throwback music and Hollywood inspire celebrity costumes

Some say it's not really Halloween until the trick-or-treaters hit the streets, but that didn't stop celebrities from stepping out in their best, spookiest finery to for parties overthe weekend.

A few themes emerged about what inspired some of the best star costumes this year. (Hilary Duff, you'll have to do much better next year).

Ripped from the headlines

From the imminent U.S. presidential electionto Olympic-size scandals,newsmakerswere just too irresistible to to ignore.

Musical blasts from the past

Many celebrities hit the dial to embrace retro music of the past, getting in touch with their inner musicians from the '60s, '70s, '80s and '90s.

Heroes, kings, ingenues and a horse

How fitting that many movie and TV stars were inspired by onscreen characters both classic and new.