The rise of the belfie; Helen Flanagan, Cheryl Cole and Kim Kardashian share bum ‘selfies’ and spark new craze

When Kim Kardashian shared a close-up shot of her bum with the world, by posting it on Instagram, she knew she'd set pulses racing and grab headlines around the world. But what she may not have guessed is that she'd trigger a new craze, the celebrity bum-selfie AKA the 'belfie'. Here we round up the stars who have joined Kim on the belfie bandwagon!