Miley Cyrus shows off engagement ring, again, after reports of split with Liam Hemsworth

Miley Cyrus has posted a picture of herself on Twitter wearing her engagement ring, sparking speculation she is back together with Liam Hemsworth.

The Hannah Montana star tweeted a picture of herself wearing her 3.5 carat Neil Lane sparkler, following weeks of speculation she had called off her wedding to fiancé Liam Hemsworth.

The picture shows her having a "onezie party (of one)" in an animal-themed outfit, with her expensive ring clearly on display.

She added: "When you don't know what to wear ... Wear a onezie. #killtwobirdswithoneonezie (sic)"

Miley was first photographed without her ring on March 6 after rumours emerged Liam gotten close to 'Mad Men' beauty January Jones, before escaping to his native Australia to think things through.

However, the 20-year-old starlet - who got engaged to Liam last May - is adamant the pair aren't taking a break and says her ring was simply being fixed by the jeweller, who is a favourite with celebrities.

She ranted last week: "I didn't call off my wedding. Taking a break from social media."

Friends insist the couple - who fell for each other on the set of 'The Last Song' - are having issues because of her unruly behaviour over the last few months, including shaving her head and getting a tattoo.

A source said: "Miley can be a super jealous girl and feels like she probably pushed Liam away. And even though she doesn't really want to tame her wild ways, if she wants to keep Liam she's going to have to."