You can get mesh tube girdle things to use, but I just tuck it in my underwear.
The years I was on PD my cath was 'tunneled' and exited midway between my breast and the center of my chest, a couple inches above the zyphoid. Since I am a 'Guy' I don't even own a 'Bra' although I have to admit I am large enough I could maybe use a 'Bro'.
The PD Cath Belt was ichy, scratchy, hot, and drove me nuts. I can fully understand why women complain that their bra is killing them!
I taped. I often alternated the spot where I taped. Betadine wipes became my usual prep.