The Can't Be Tamed singer - who is engaged to The Hunger Games actorLiam Hemsworth- took to Twitter to post a pic of the actress in the glitzy, lace catsuit she wore to The Twilight Saga: Breaking Dawn - Part 2 London premiere.
Along with the snap, Cyrus added the caption: "K Stew keeps getting better! ughhh this look is soooo goooood! ❤ #girlcrush."
Miley herself has had a complete make-over since the days of Hannah Montana, stepping out this week with her blonde hair cut even shorter.
According to The Sun, the 19-year old was seen with a grade two short back and sides crop in New York, as she made her way to surprise dad Billy Ray Cyrusby watching him in Broadway musical Chicago.
The Party In The USA hitmaker completed her look with black biker boots, tights, a short skirt and fluffy black jumper.
Earlier this week, Miley hinted that she's having a complete image overhaul, tweeting: "I think it's time for ANOTHER closet clean out."
Earlier this month, Cyrus rubbished rumours that she's planning three ceremonies when it comes to getting hitched to Hemsworth, telling Ellen DeGeneres: "There's some rumour going around that I'm having like 47 weddings - I'm not. I'm having one wedding.
"That's my day and whatever I want on that day, it will be about me and that moment, that look of love."