i don't think there is any hard and fast rule for this sis.
iba-iba kasi tayo ng body types and measurements. basta importante eh ayos yung fit, walang naiipit na laman (o taba in some cases
) to avoid discomfort.
personally, high-waist or even some regular-rise jeans don't fit me well because of my hips and thighs. tama yung fit sa hips, tapos luwag naman sa waist.
so it's mostly low-rise and hipster jeans for me (pero hindi naman yung kita na butt cleavage
), and i don't really base the size of my jeans sa waistline ko.