No actual spoilers! Only questions. (SYTYCD 7/22 results show)

Kat, what the heck are you wearing? Why do you have a 1930s-era nighty on? (It's not as bad as that mustard thing from a few episodes back, mind. That was a hideous color on you. But you normally dress so wonderfully!)

Does anyone else find it kind of odd that the all-stars always dance in the results show opening number? The contestants are in the minority now, and it's weirding me out for some reason.

ETA: ( I LIED, THIS ONE IS A SPOILER!!!!! )