Paris Hilton suffered a wardrobe malfunction at her 33 birthday party on Feb. 15. Credit: AKM-GSI

Barbie never showed off that much skin! Paris Hilton ate up the spotlight at her 33rd birthday bash in Hollywood on Feb. 15 in a bright pink Alon Livne cutout dress, but when the famed heiress decided to go without underwear, the gown's high slits caused her to suffer a serious wardrobe malfunction. 

The former reality star-turned-DJ showed off a tiny tan line on her hip, and when the front panel of the dress' skirt shifted, her crotch was exposed as photographers caught the embarrassing moment. 

"This was one of the couture gowns [from the runway show], and I said, 'I have to wear that for my birthday it's like the perfect Barbie princess dress,'" Hilton revealed to Us Weekly of her ensemble at the party. 

Hilton also addressed the outfit on Instagram, posting several photos with explanatory captions. 

"Yes! I know! My dress has a very high cut slit! And that's because it's a dress straight off the runway!" she wrote on one image. And continued to defend her choice, writing, "Yes, my dress was a lil revealing. But it's my birthday & it's a dress straight off the runway. I don't care what haters say, I think it's stunning! #BirthdayBarbie." 

The Greystone Manor soiree was just one of Hilton's many birthday celebrations. She officially turned 33 on Feb. 17, but the former Simple Life star has plans for "about a month" of celebrating in venues across the globe.