http://cdn.idolator.com/wp-content/u.../mileygaga.jpg
Thats the outfit she wore to the Royal Variety Show to preform to the queen. (Sorry it has Gaga in it but its the only clear full photo I could find.) Great way to make a impression on the Queen by wearing a shorts and a long shirt. Sadly, I think this is what I really ever see Miley wearing, when its not anything.
On a side-note: Gaga looks thrilled. XD