Former 'N Sync star Lance Bass has marked the first anniversary of his engagement to fiance Michael Turchin by asking his beau to marry him again.

Bass, 35, presented his partner with a new gold and black ring in honour of the happy occasion on Sunday (31Aug14) - and then posted a photo of Turchin wearing his new jewellery online.

Turchin wrote, "Who gets proposed to a second time on the first anniversary of the first proposal?? This guy!!!"

The couple plans to wed in early 2015.