That's because you should size your bibs on height as much as anything. I take a medium or large in bibs but a small in jerseys. Small bibs would look like hotpants!
^ Depends on the make too. Some are sized by height others by chest/waist.
Bibs:
2XU: S
Castelli/Rapha: M
ShuttVR: L
Jerseys:
2XU/ShuttVR/Rapha: S
Castelli: M
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