I have done the partial tucking thing, but it also makes me feel like I'm trying too hard. ;-) I'm a C with a bit of a tummy, so most of my pants hit low in the front, and tucking in just accentuates the tummy in a bad way. I much prefer going untucked and just choosing shirts that are shorter and more fitted. The exception is with skirts, which hit higher and thus accentuate my waist if the top is tucked in. I do belt the untucked tops sometimes, but as a C sometimes that makes my hips look too wide -- depends on the length and the fabric. YMMV (your mileage may vary), as they say!