The "Wrecking Ball" singer and her fiancé, Liam Hemsworth, joined Liam's brother, Chris Hemsworth, and his wife, Elsa Pataky, for a holiday party on Friday.
Liam, 26, shared a selfie with Miley on Instagram, showing off his red-and-green striped sweater adorned in candy canes and reindeer. His lady love was even more party-ready in a birthday Jesus sweater, which she paired with a red-and-green sequined bow and her beloved Christmas lights necklace.
"Happy birthday Jesus," the Independence Day: Resurgence star captioned the pic.
The duo appeared to have an awesome time, with the happy hippie even doing an outfit change! Elsa shared a sweet photo of her and Miley hugging inside the soiree, and the 24-year-old singer was now in a Santa-inspired dress.
"Fun Christmas Party with my family! Fiesta de Navidad con mi family!!! ?? happy Christmas! Feliz Navidad!" Elsa wrote.
Elsa, 40, also shared a photo with her hubby in the wee hours of Christmas Eve, and we don't blame her for being enthusiastic -- she's getting a huge kiss from Chris as they stand in front of a Christmas tree.
"Best Christmas present ever! A kiss from @chrishemsworth!!!" she captioned the sweet snap in both English and Spanish.