Hailey Bieber and Jaden Smith led a star-studded Levi's campaign urging Americans to vote in November.

Jaden, 22, was wearing a sweatshirt that read 'VOTE' with a collared shirt and a pair of the brand's iconic jeans.

'With all the change we need to see in the world - the progress we need - voting is the one way any individual can have a say in his or her future - if my generation registers and votes en masse then we control the future - but you have to vote!!!' said the son of Will Smith and Jada Pinkett Smith for the campaign.

Meanwhile the wife of Justin Bieber showed off her trim midriff in a crop hoodie that read VOTE in between a stars and stripes motif.

The singer Miguel cut a dashing figure in a pair of fashionably torn jeans and what looked like a plain dark T-shirt.