Minimalism is a good rule of thumb.
The shorts on Demetra’s romper were excessively short, according to the school administration. This story wasn’t over, however, and he requested for further details. The “fingertips test,” according to the administration, was used.

For female students, the fingertip test must be used to assess whether or not their pants are hanging above or below the fingertips. If they extend beyond her fingertips, they are considered too short. As soon as Demetra put the short on, she realised it was far too short to even cover her fingertips. Tony couldn’t take it anymore.