The actress performed live on stage for the first time in four years at Bootsy Bellows in West Hollywood yesterday (24 September) and was joined by Los Angeles girl group, YLA.
But although the five YLA girls were dressed in colourful ensembles that looked like they were taken straight from the wardrobe of Little Mix, it was clear that Vanessa and her hot-pants stole the show.
24-year-old Vanessa - who is partial to a bit of twerking - was seen gyrating and dancing enthusiastically throughout her set, proving that a pop star still exists within her.
She teamed her leather shorts with a cropped long-sleeved top, a gold body chain and a pair of black knee high boots, while leaving her ombre hair down and in loose curls.
Earlier in the evening, Vanessa hooked up with YLA for rehearsals and flashed her stomach in a cropped T-shirt, which she wore with a pair of ripped denim shorts and a backwards cap.
This isn't the first time that the former Disney star has worked with the girl group, since she also recorded vocals for their single '$$$EX' at the beginning of the year and appeared in the accompanying music video.
Could she be their sometimes-sixth member?!
What do you think of Vanessa's stage outfit? Let us know below, as the best comment each week wins £50!
Watch Vanessa's 2007 music video for 'Say OK' below: