Mariah Carey and Nick Cannon's twins are adorable in their matching superman costumes.
Giuliana and Bill Rancic's son is the cutest doctor we've ever seen!
The Duck Dynasty family head to church to "trunk or treat."
It's Grease lightening! Melissa Gorga's young boys go as T-birds. Hair gel included!
"Lil ghostbusters , dada batman n mommy catwoman!" American Idol finalist Jennifer Hudson Instagrammed on Halloween night.
Neil Patrick Harris' twins aren't afraid to get a little spooky on Halloween night.
Former President George W. Bush gets in the holiday spirit as he takes his granddaughter trick-or-treating.
Snooki's adorable toddler wore a festive vest and posed with some Halloween decorations!
The funnyman's snoozing 3-month-old daughter donned a fluffy and feathery chicken costume.
Britney's little guys channel Batman and a ninja for Halloween in London. Fierce!
This little lion looks like she's tamed her Top Chef-hosting mom, Padma.
The cute little Gorgas get their Halloween holiday on.
Real Housewives of Beverly Hills star Camille Grammer and her daughter, Mason, were both feeling the pirate vibe at the Dream Halloween Los Angeles event, but little Jude decided to go as a Transformers character. What a rebel!
With Teen Wolf, Dracula and the Grim Reaper by her side, nobody's messing with Holly Robinson Peete or her boys at the Dream Halloween bash!
MORE PHOTOS: Celeb Halloween Costume Craziness!