Motherhood clearly hasn't dented Mariah Carey's crazy sense of fun.
The superstar singer and husband have already introduced their twins, Moroccan Scott and Monroe, to the family tradition.
Ahead of Halloween, the fancy dress enthusiasts dressed up as comic book heroes the Incredibles, with their six-month-old babies in matching outfits.
The couple – who've been married since April 2008 – posted their personal album on a specially created site called Dembabies.com.
"We deliberated for so long about how to reveal the first pictures of our babies to the world.
"We just didn't want to do the typical thing and display them in a tabloid (not that there's anything wrong with that).
"We decided to share this beautiful experience with you in a special intimate portrait of our family.
They added: "Parenthood is absolutely the most life changing experience we could ever have imagined.
"The love we feel for these babies is above and beyond anything we'd ever dreamed of."
In pictures: The whirlwind romance between Mariah and her loverboy