Credit: Albert Michael/; Jake Holly/; Jody Cortes / WENN

Every doll knows that Kim Kardashian loves a good costume!

On Friday, the reality star turns 31 years old. "I think it's freaky," she told Us Weekly Tuesday The Angel Ball in NYC about her upcoming birthday. "Now I'm really an adult!" 

In an episode of Kourtney and Khloe Take Miami earlier this year, Kim mused: "I seriously thought by the time I was 30, I would have one [baby] and a bun in the oven... I cannot wait to have a baby just like [Mason]." 

PHOTOS: Kim's best booty moments

But even though Kim doesn't have her own tot -- yet! -- to dress up for Halloween, she'll undoubtedly have some fun with her own costumes this year. 

"I can't believe Halloween is coming up so soon. I really need to start thinking about a costume!" she wrote on her blog Saturday. "Do you guys have any ideas?"

In the past, Kardashian has been a pirate, little red riding hood, Princess Jasmine and everything in between. She also donned a burqa during a business trip to Dubai earlier this month.

Tell Us: What is your favorite of Kim's sexy looks?