Kim Kardashian and Kanye West attended the annual Met Gala in New York City on Monday night, where the Keeping Up with the Kardashians star has a fashion malfunction.

Kardashian, 33, wore a Lanvin gown with an extra-high split, showing off her legs. However, when she put her hand in her pocket, she exposed her black underwear.

According to The Mirror, the wardrobe malfunction occurred when they were leaving the Lanvin store on their way to the gala – widely regarded as fashion’s biggest night of the year.

Kardashian had the gown custom-made to fit her perfectly. Although she flashed her underwear to photographers on the street on the way to the event, she kept it all covered up while posing for pictures with her Yeezus star fiancé while there.

Entertainmentwise reports this is the second time Kardashian has attended the Met Gala. Last year, she was pregnant with her first child, North West and wore a floral gown designed by Givenchy’s Ricardo Tisci.