Kim K's Maternity Dress is Actually Kourtney's

Though the fashion critics were more than a little harsh when Kim Kardashian stepped out in a tight-fitting beige babydoll dress Wednesday, it turns out Kim actually borrowed the much-talked about maxi frock from big sister Kourtney!

"When Kourtney was pregnant, she was able to dress her growing body so well! I've been turning to her for styling advice and tips since her effortless preggo fashion has served as inspiration for me," Kim wrote on her blog today, posting side by side shots of the two in the same dress. "I actually borrowed this Rachel Pally dress from Kourt and I'm obsessed with how comfy and chic it is."

Pics: Kim Kardashian Maternity Styles

Kourtney first stepped out on in the dress in June of 2012, though there's no denying that the dress certainly looks different on her more petite frame.

Kim's been the recipient of a lot of flack lately for her unconventional maternity style, but says on her blog that she's still all about "experimenting."

Video: Khloe -- Criticism of Pregnant Sis Kim 'Disgusting'

"I love experimenting and playing around with different looks and outfits, but it’s also nice to have someone who knows a thing or two about dressing up your baby bump!," she says about her big sis's style.

Do you think Kim should be taking maternity style advice from Kourtney?