Liam Hemsworth on vacation in Australia on March 10, 2013. Credit: MEDIA-MODE

Hunger Games hunk, indeed! While his fiancee Miley Cyrus is stepping out in L.A. without her engagement ring, Liam Hemsworth is showing off what she's missing while he's away in Australia.

The Hunger Games actor revealed his hot beach bod while swimming and playing around with friends in his native Australia on Sunday, March 10. Hemsworth, 23, put his impressive muscles on display by wearing rainbow striped swim trunks during his fun day on the beach with pals.

On March 8, Hemsworth was spotted spending time with brother Chris Hemsworth, sister-in-law Elsa Pataky and his niece India Rose.

Cyrus, meanwhile, has been partying in Hollywood. The "Can't Be Tamed" singer, 20, went to a house party with her fiance's friend, Paul Khoury, on March 7 without wearing her 3.5-carat engagement ring. The LOL actress also opted not to wear her diamond sparkler the previous day while heading to the recording studio.

Multiple sources told Us Weekly that Cyrus and Hemsworth, who became engaged last June, have had major issues in their relationship over their dueling careers and Cyrus' dramatic makeover. "He's not happy," one pal said of the actor.

Cyrus tweeted a denial that she has called off her wedding, and added, "Taking a break from social media. Draining . . . Not discussing anything but my music from now on."