With HRT shrinkage, I seldom worry about it any more. But sometimes I look in the mirror and it's just, Nope, that's not going to work. In those cases, I wear firm-control briefs. The elastic fabric holds the bits out of sight where they belong. It's not a super-tight tuck, so it's not uncomfortable, but the fabric gives you a natural shape. Just pull 'em on, tuck the bits in, and you're good to go.