The 'Want U Back' singer joined the likes of Kim Kardashian West, Selena Gomez and Taylor Swift at the LA-based do, and ensured she stood out from the crowd with her head-turning ensemble.
Showing off her svelte figure, Cher opted for a see-through mesh top which (thankfully) featured strategically-placed beads and sequins to cover her modesty.
She tucked her top into a pair of high-waisted plain shorts while topping her pins with sophisticated pointed courts teamed with a matching jet black manicure.
And we're a little bit jealous of her brunette locks which were swept back away from her face and tumbled past her shoulders in loose, glossy waves.
Her make-up was totally immaculate too, with the starlet sporting a slick of feline liner and fluttery lashes, plus arched brows and caramel nude lippy. Gorgeous!
Cher - who rose to fame in 2010 on The X Factor - took to the stage later that night alongside Demi Lovato to perform their song 'Really Don't Care'.
The songstress certainly stole the limelight with her outfit, rocking a pair of sparkly gold trousers and a tight crop top, while Demi paired her all-black ensemble with a fierce Moschino body harness.
The lucky pair were also nominated for two awards at the ceremony and ended up walking home with the Choice Summer Song gong for their hit tune.
Good work, ladies!
What do you think of Cher's outfit? Let us know by commenting below as the best comment across the site each week wins £50!
Got an iPad or iPhone? Reveal Mag is specially designed to fit!
Reveal is now on Google Plus! Join us here for the latest pictures, fashion and celebrity news!
Watch Demi and Cher's video for 'Really Don't Care' below: