Big Hollywood Halloween bash Saturday night ... and most of the celebs stuck to tried-and-true costumes.
Darren Dzienciol's CARN*EVIL party was hosted by Alessandra Ambrosio in Bel Air. Lots of folks showed, including Megan Good, Doja Cat, Tyga, Josie Canseco, Jamie Fox, Ryan Phillippe, Victoria Justice and Jeff Ross.
Another Halloween bash attracted the likes of Demi Lovato, Joe Jonas, Sophie Turner. and Emma Roberts.
There were various other parties as well, but all of the costumes were PG Halloween. Not so much over at the TMZ office Friday .