The "Wrecking Ball" singer took to Instagram to share her wishes for Hemsworth, reported E! online.
Miley posted a picture of her alongside Liam and said that she was lucky to have him in her life.
In the photograph, the duo are seen making funny faces.
"Happiest birthday EVER to my favourite being EVER EVER EVER! You have been my best friend since the day we met..." she wrote.
She continued with the emotional message, "I am beyond lucky to share sooooo many animals with you!!! I love you @liamhemsworth.
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