Puberty must have taken a second shot at Kagami if she grew enough that the uniform she wore as a senior in high school no longer fits her lengthwise.

PixelOne said:

Puberty must have taken a second shot at Kagami if she grew enough that the uniform she wore as a senior in high school no longer fits her lengthwise.

I've noticed that about a LOT of anime and manga nowadays myself.

Apparently, in Japan, it's now 100% normal to shoot up about a full foot (12in/30.3cm) in height AFTER you're 18.

"OH, Women stop growing around 14-16 and Men stop growing around 16-18? Well, don't worry about it. You're Japanese, where everyone gets a SECOND puberty and shoots up in height, even in their 20's"