The Black Eyed Peas frontwoman took to The Venetian venue while playfully posing with her wax figure alongside her mother Terri, father Pat and sister Dana.
Getting caught up in the fun-filled festivities, Fergie at one point grabbed a handful of her waxy duplicate's bosoms as husband Josh Duhamel stood in the crowd to take pictures with his cell phone.
The visit to Sin City comes as the 36-year-old singer is set to perform with her bandmates on Friday (September 23) as part of the iHeartRadio Music Festival.
Other acts lined up to take the stage include Jay-Z, Coldplay, Lady Gaga, Carrie Underwood, Nicki Minaj, Kenny Chesney and Jennifer Lopez.
Enjoy the pictures of Fergie unveiling her new wax double at Madame Tussauds (September 22).
Photo Credit: Getty Images
