The former Miley Cyrus star debuted a short, shorn haircut last week and has faced criticism from many for the drastic change.
While Cyrus has brushed off the negative comments, she has since revealed that Hemsworth has no complaints about her new style.
"He loves [my haircut]," Cyrus tweeted to a fan on Tuesday. "Last night he said I look the happiest he's seen me in a while :) he likes seeing my eyes more."
She insisted that her self-esteem has benefited the most from cutting her locks, writing: "self love is the greatest of all flatterers."
Cyrus and Hemsworth announced their engagement in June.
The 20-year-old has said that the Hunger Games star's proposal was a 'complete surprise'.