The star was visiting Philadelphia radio station WIOQ on Saturday evening (June 16) during promotion for her new single 'Want U Back'.
After her appearance, Lloyd was confronted by a crowd of enthusiastic fans who gathered around her car.
The singer proceeded to stick her head out of the vehicle's sun-roof and thank her fans on a megaphone.
Lloyd recently released 'Want U Back' in the US as her North American debut single. The track is currently gaining momentum and is inside the Top 30 on the US iTunes.
'Want U Back' has sold over 100,000 copies in the US so far, while the accompanying American music video has gained over 5 million YouTube hits to date.
Watch Cher Lloyd getting mobbed by her US fans below: