Kendall Jenner Proudly Reveals She Ate Pizza Before Walking Marc Jacobs Runway

The 20-year-old model had a pizza party backstage!

Kendall Jenner had a pizza party backstage at Marc Jacobs runway show as part of New York Fashion Week on Thursday.

While models usually admit to fasting or eating light during this time of year, the 20-year-old reality star revealed on her subscription-only website and mobile app that she dined on a slice of pizza before stepping out on the catwalk.

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"Yes, I ate pizza before walking Marc Jacobs," she titled her blog post. "Working my a** off, but having a BLAST! I downed pizza while I did my makeup touch-ups, haha."

Kendall + Kylie

Jenner looked nearly unrecognizable when she hit the runway in a goth-like fashion. She was joined by Mother Monster herself, Lady Gaga.

WATCH: Kendall Jenner Joins Calvin Klein's Sexy Spring Campaign -- See the Underwear Pics!

"Look at those two," Jacobs proudly Instagrammed.

This past week, Kendall also launched a clothing line of her own with sister Kylie Jenner, and spoke to ET about the designs.

"We just decided it's something we wanted to do on our own and give the fans exactly what they wanted from us," she said of the new collection, adding that the styles are "our more mature, stepping-it-up line."