Because, ya know, it's only been four months since Kourtney gave birth to Penelope Disick and, really, that's a skintight Batgirl suit ... momma-superhero makes the costume her own with platform ...

wore a Batgirl Halloween costume to work on Thursday ... t mean I take *myself* too seriously,” she wrote. “To my kids Luke, Paul, and Betsy, I’m still just Mom—seeing the Bat Signal ...

After Cassie saved Jim Gordon, she was given a new Batgirl costume. Elsewhere, one-time Robin and current Spoiler Stephanie Brown took up the Batgirl mantle after Batman’s apparent death in ...