When do shoulders broaden?

Question:

At what age do shoulders start to broaden on average?

Answer:

Widening of the shoulders typically occurs in the latter part of stage 4 and can continue into stage 5. It is not set at a specific age but at what phase of development you are in. Also, in stages 4 and 5, males usually gain the ability to build muscles, and these muscles will also make the shoulders look wider.