Pregnant Katherine Schwarzenegger celebrates Halloween as her "fairy angel and mermaid" daughters go trick-or-treating ...

This isn't the first time the reality TV star has opened up about her quest for peace. In an Instagram shoutout dedicated to her best friends — twins Malika and Khadijah Haqq — on their 41st birthday ...

From North West's array of creative ensembles to Peta Murgatroyd and Maks Chmerkovskiy's Australian-inspired family costume, see this year's cutest kid costumes ...