Let it be known: the Hemsworth clan goes all out when it comes to parties. Over the weekend, Liam Hemsworth and his fiancée, Miley Cyrus, attended a gold-themed birthday bash for his sister-in-law Samantha. While Miley, who brought along her pals Wayne Coyne and Katy Weaver, wore a gold jersey and a fake Olympic medal around her neck, the Australian actor showed a little bit of leg by donning gold shorts and a tank top from Venice Beach fitness center Gold's Gym. And the craziness didn't end there. The eldest Hemsworth brother, Luke (and husband of the birthday girl), also took to Instagram to post a fun snap of the guys posing with a life-size gold horse statue. If this is any indication of what's to come for Liam and Miley's wedding, their guests are in for one wild reception.