Christina Aquilera joined son Max one year as matching skeletons, and to complete the look, her little one carried an elmo treat bucket. If you are thinking about the bones look for your little one this Halloween, consider this Voice judge's previous kid/adult costume as inspiration.  If Mommy shows her femur too it's not as scary. We love how Christina matched some black baby converse to the skeleton ensemble.  Not sure if the bones glow in the dark but that would be awesome for trick or treating after dark. 

Mariah Carey and Nick Cannon
New parents Mariah Carey and Nick Cannon dressed up as The Incredibles along with their twins, Moroccan and Monroe.

Gwen Stefani's boys made adorable little dinosaurs back in 2010.  It's nice to keep a theme when you have siblings and Kingston and Zuma were such cute roaring buddies that it probably helped the brotherly bond. No one complains at the last minute about wanting to be batman instead of superman, etc.  Gwen went off theme with her Toy Story cowgirl costume, but it seems her boys were thinking about their mom's get up this year when they bought Kingston a cowboy costume. Zuma went for batman.  Last year Gwen went all out as Cinderella.