The shape starts with a skim fit that's flattering to the average female midriff. Time to weed out anything tight or very stretchy. Nothing emphasizes rolls of any variety like lots of elastin. Lightweight cotton, rayon jersey, tencel. modal and silk blends are fabrics that create drape over feminine curves and smooth over bra bulge. The shoulder has changed subtly from high and tight to a slightly dropped line with short sleeves that are a little longer. This is a visual improvement over cap sleeves which cut into the fullest part of a woman's upper arm. The longer line of the boyfriend fit is elongating and flattering when it hits at just above the low hip.  Pass on any tee that rides up above your belly button.  So, there are three reasons and here are two more. A tee shirt that is shrunken and too tight looks dated and is a look-blower. When you keep your tees modern-looking, you 'll look modern in what you pair them with. And nothing gives a girl more high/low versatility than a good old white tee paired with anything from denim to an evening skirt. This season's statement necklaces look glam not precious with a tee shirt. So look around for a style that works for you. 

I recently conducted a workshop and among the most frequently asked questions was " What kind of tee shirts should I buy?" " Should I tuck them in? Leave them out? "  "How do I wear longer tee shirts?" Which brings us to tucked vs. untucked. Tucking your tee into low waisted pants and blousing it slightly provides waist definition without any clinging. The half-tuck ( below left) is kid's stuff and looks too sloppy for grownups. If you leave your tee untucked, the hem should reach no longer than low hip or it can have a widening, blocky effect. Choose a bottom that won't look bulky underneath.

If a slouchy boyfriend tee isn't your look then go with a  trim boat neck tee and a v-neck or u-neck that is just slightly more fitted. And a here's a tip: if you happen to find your best fit in a long sleeve style ( check out the Gap and lines like 3 Dots, for example) then buy a few colors and have the sleeves hemmed to your perfect short sleeve length. It's a simple cut and sew job that the drycleaner can handle.