"Happy Hollydaze!" the "Wrecking Ball" singer wrote in the caption. "#bestpresentwrappereva."
One gift the Independence Day: Resurgence star got his lovely lady was some custom jewelry! Specifically, a colorful crescent moon earring.
"I [love] my rainbow moon my dude made for me," Cyrus, 24, captioned a pic of the cute present.
The couple spent Christmas with Cyrus' precious rescue pooch, Dora. In one super cute photo, the singer and Hemsworth -- who was rocking a hooded Christmas-themed pajama set -- cuddled with the cute canine on their sofa. She also used the photo op to promote pet adoption and rescue.
"Thinking about how lucky we are to spend Dora's first Xmas together as a fam!" Cyrus wrote. "Our big and beautiful rescue! What a perfect holiday present for your family to ADOPT & SAVE a life"
On Sunday, Hemsworth shared a heartfelt pic of Cyrus giving him a loving peck on the cheek while they sat with Hemsworth's mom, Leonie. While he appeared to be pointing a celebratory finger gun at the camera during the cute smooch, the actor nonchalantly captioned the pic, "Whatever."
Meanwhile, the Thor star's wife, Elsa Pataky, snapped this beaming pic with Cyrus in front of the Christmas tree.
Last week, Cyrus' fiancé hung out with her parents at an early Christmas bash
, and snapped a pic in front of the tree alongside Cyrus' parents -- Billy Ray and Tish -- and her siblings, Trace, Noah, Brandi and Braison. Check out the video below for a look at the sweet holiday moment.