Beauty way to go

While eating my burrito al fresco, I observed, without turning my head:

3 white flouncy skirts
1 white mini skirt (denim)
4 white capri pants
1 white pair of those culotte pants that everyone has this season

Guess white is in.

Question: Is it better to have a visible panty line showing that you aren’t wearing a thong, or one showing that you are?