Oh, it's supposed to be loose to start with, so there's plenty of material left to take in to get it to the right size. I measured one of your shirts that I know fits and allowed for extra inches from there.

[Did you need a reminder of how your little girl can be benevolently sneaky from time to time, Vegeta? Because there it is.

She takes out the measuring tape and begins working, measuring around the waist first, then pausing to write down the measurement.]