Selena Gomez might’ve made a rookie mistake Sunday when she didn’t dance-proof her dress before performing at the 2011 Concert For Hope.

The 18-year-old singer twirled a little too much in her sparkly pink outfit, causing the skirt to fly up a few inches too high.

Selena Gomez 2011

The wardrobe malfunction revealed Gomez’s beige, Spanx-like undergarment, though she seemed none the wiser at the time.

Selena Gomez 2011

The Disney star made no mention of the incident afterward, simply posting on Facebook that she “had such a great time” at the concert, where she performed her new single “Who Says” for the first time.

Selena Gomez 2011

The young star, who is currently dating teen heartthrob Justin Bieber, was probably grateful she wore the shapewear, which prevented an even worse celebrity oops.