Uniforms at my company (both first issue and subsequent upgrades) are unceremoniously delivered to the pilot's base in a large plastic bag for collection from the office. Upgraded uniforms aren't even new issue, but the old uniform being returned with the extra stripes.
The industry generally is remarkably short on ceremony. The flying training schools however, love to make a big show of graduations and issuing stripes and wings for pretty much everything down to being able to tie your own shoe laces, but for the money they charge, so they bloody well ought to.