Cyrus' fiancé 'mortified' after VMA twerking performance

Miley Cyrus' performance at the MTV Video Music Awards left Liam Hemsworth "mortified", according to reports.

The 'We Can't Stop' hitmaker gyrated on stage with Robin Thicke in a flesh-coloured bikini during a rendition of his single 'Blurred Lines' at the event on Sunday and her fiancé is said to be "embarrassed" by her antics.