Britney Spears is bringing sexy back!
The singer was one of the celebrity guests at Wednesday night's City of Hope Awards in Los Angeles -- where she showed up wearing a backless white gown that showed some major skin.
The 30-year-old mother of two looked flawless at the event, sporting some amazing hair extensions and some fresh makeup.
Also helping her overall look: Fiance Jason Trawick, who posed alongside her in a suit.
Britney wasn't the only blonde bombshell at the party though.
Miley Cyrus performed at the event, stepping out in a studded, zip-up top and full-length white skirt. She also showed off her short new 'do and her sparkly engagement ring from fiance Liam Hemsworth.
Other star sightings included a svelte Jordin Sparks, "American Idol" runner-up Jessica Sanchez and "X Factor" wannabe Sophie Simmons.
Check out all the arrival shots in the gallery above!