LeAnn Rimes has joined the unofficial celebrity nip slip club.

Rimes, 30, wore a tuxedo-style satin jumpsuit with a deep, plunging neckline to the NOH8 4th Anniversary Celebration on Wednesday, Dec. 12. The wardrobe malfunction occurred when the country singer bent sideways to adjust a strap on her shoe. Photographers were able to take a photo of one of her breasts after her top opened and revealed she wasn't wearing a bra or pastie.

View Rimes' nip slip photo here 

The singer was unaware that that she had exposed her chest to photographers. She continued to pose for pictures and sign autographs with her husband Eddie Cibrian. The couple planted a kiss on the lips for photographers on the red carpet and Rimes later sang for the crowd at the event. Skylar Grey, Kerli and Jamar Rogers also performesd.

Rimes joined an ever growing list of female celebrities that have had wardrobe malfunctions in the past couple of months.

Earlier this week, actress Anne Hathaway unknowingly flashed photographers at the New York premiere of her film "Les Miserables." The 30-year-old stepped out her chauffeured SUV at Ziegfeld Theater in New York City and accidentally revealed she wasn't wearing any underwear to the event on Monday.

Several other stars have had nip slips in the past three months: Nicki Minaj when she visited the set of BET's "106 & Park," Kris Jenner and Jennifer Lopez in October, and actress Emma Watson in September.

After Jenner posted then removed a revealing Halloween photo of herself on Instagram, her 28-year-old daughter, Khloe Kardashian, decided to share the image with her almost 8 million Twitter followers.

"Hi nips...That's my mom," Kardashian tweeted on Oct. 20. Her tweet linked to a photo of Jenner's wardrobe malfunction in a racy Wonder Woman costume on her Instagram account. In the image, the proud mother of six and grandmother of two is wearing a sexy costume that revealed more than her ample bosom-it also showed her right nipple and part of her left nipple,

Lopez unintentionally flashed her nipple in front of a sold-out crowd in Italy on Oct.11. The mother of two was performing at the Unipol Arena in Bologna when her dance moves caused the top half of her sparkle catsuit to reveal more than the fans bargained for.

When former "Harry Potter" star Emma Watson, 22, wore a stunning flesh-colored tiered dress to the premiere of "The Perks of Being a Wallflower," the halter-style portion of her gown shifted to one side and revealed more than a side boob. Thankfully, the entire breast wasn't exposed since her wardrobe stylist was clever enough to place a pastie over it.