We get issued with both.
As a AMEL we have the same uniform as the pilots. White shirts and smart trousers. I should say workwear as we don't get the tax relief on the cleaning bills!!
Techs, mechs get polo shirts and cargo pants much more hard wearing.
I still like to get stuck in a job and our uniform is useless, the trousers are like hoover bags and tear, the shirts funny enough get dirty unlike a flight deck!!
Bit of a pain when you can only receive two shirts every 6 months and still have to maintain a professional image in front of the punters.
Still shouldn't complain at least I don't have to buy it!