Liam Hemsworth and Miley Cyrus party with pals at gold-themed bash -- and nail their looks

Miley Cyrus and Liam Hemsworth Attend Crazy Party

Miley Cyrus and Liam Hemsworth go for the gold!

Amid all the Summer Olympic festivities, the couple celebrated the birthday of Samantha Hemsworth, Luke Hemsworth's wife, with a gold-themed party, which included a giant gold horse. Really committing to the theme, Liam, 26, wore a Gold's Gym tank-top and gold shorts. Miley, 23, also went the athletic route, donning a gold medal and a matching basketball jersey.

EXCLUSIVE: Liam Hemsworth on Miley Cyrus Wedding Rumors -- 'Everyone's Happy'

Flaming Lips frontman and Cyrus' tourmate, Wayne Coyne, wore gold horns to the party, but it was Liam's brother that nailed his costume. "@thesamanthahemsworth 's birthday," Luke captioned a photo of his epic outfit. "I think the theme was "Gold"? I even had gold mankini on underneath."

Miley seems to fit right in with The Hunger Games star's family. In April, she even got a matching finger tattoo with Chris Hemsworth's wife, Elsa Pataky.

WATCH: Billy Ray Cyrus Hints He Might Officiate Miley Cyrus and Liam Hemsworth's Wedding -- 'They're Really Happy Together'

Last week, Liam and Miley inspired some serious relationship goals when they did their own version of "Carpool Karaoke" and sang along to Justin Bieber's "Love Yourself." Check it out:

Miley Cyrus and Liam Hemsworth Step Out for Day Date - and She Has a New Ring!

Read Full Story

Sign up for Entertainment Insider by AOL to get the hottest pop culture news delivered straight to your inbox!

Subscribe to our other newsletters

Emails may offer personalized content or ads. Learn more. You may unsubscribe any time.