nipple piercing help

Hi. I'm getting my nipples pierced tomorrow and I'm abit confused. 
When you get it pierced do you have to take your whole t-shirt off as well as your bra ? 
And after it's been pierced can you put your bra back on? 
I'm not worried about pain I've had a lot of piercings on my face but not body so I'm quite confused. 
Thanks