Credit: Kevin Mazur/WireImage

Baby got back!

Though she's dazzled on many a red carpet this season, Kim Kardashian's appearance at Sunday's Grammy Awards was almost hampered by a major fashion emergency.

Chatting with E!'s Ryan Seacrest, the Kourtney and Kim Take New York reality star, 30, revealed that she had trouble fitting her famous derriere into her bronze Kaufman Franco gown.

"I had the biggest fashion emergency," Kardashian told Seacrest during E!'s red carpet pre-show broadcast. "I took it to another tailor and they tailored it to where my whole butt wouldn't fit in it. I was freaking out and said that if I didn't have a dress, I wouldn't go."

Luckily for Kardashian -- who attended music's biggest night on the arm of her Paul Smith-clad brother, Rob -- the fashion design house came to her rescue.

"The designers were amazing and they came in and met me and redid the whole thing," she said of her look, which was accented by Lorraine Schwartz jewels.

The 5'2" Kardashian has long talked about her curves, which she recently told she has learned to love more since turning 30 in October.

"I never knew to embrace curves," said Kardashian, who is now dating NBA star Kris Humphries. "I looked at my aunt and cousins and saw these Armenian women with big butts and boobs, and I didn't really realize how attractive it actually was then. Your perspective grows."