why don't you just borrow your sister's clothes Shigure

Which sister? Shiratsuyu's got no sleeves, Murasame's is probably too big and stretched out in the chest area, Harusame's is too small, Samidare probably accidently destroyed hers and Suzukaze's have no bottom.

Or I think they're nobody else except Yuudachi, I don't remember seing any other Shiratsuyu-class Ship other than these two.

I think Shigure secretly likes wearing Amatsukaze's clothes - she didn't have to put the hair tubes and smokestack on just to get to her room.