It's a rule of thumb to keep a number of neutral singlets and tees on hand to wear with bright or printed clothing, to tone down the look, but this season we can throw out that rule.
Got a fuschia skirt like Katie Holmes? Ditch the white tee and pair it with a printed bright singlet. It keeps things SO much more interesting and propels you straight to the top of the fashion hit list. An easy updater on an otherwise ordinary look.