On Sunday (Nov. 24), the singer shared a cute, black-and-white video with his superstar girlfriend to Instagram writing, "Happy birthday baby. Thanks for being you." Cyrus was all smiles as she gazed adoringly at her Australian boyfriend while wearing a casual white tank top and loose ponytail.
One day earlier, the star celebrated her actual birthday alongside Simpson, sister Brandi Cyrus and friends, wearing a gold crown over her freshly-shorn locks and blowing out candles on a giant, heart-shaped birthday cake in videos posted from the intimate bash. Cyrus, who recently underwent vocal chord surgery, took to her Instagram Story to write, "I will never forget my silent 27th birthday...thanks to my friends and family who made it so special!"