In a broad, simple, Anne Rockwell–like manner, Katz (Excuse Me!, not reviewed, etc.) poses a child peering out delightedly from beneath 12 big hats, each decorated with an array of iconic items. Captioned by a line or two of rhymed text, each hat evokes a month: January’s bristles with snowmen and winter gear, March’s, with shamrocks and a sheaf of crocuses, and so on, until December’s holiday theme requires such an assemblage of symbols that Lena’s hat spills onto a fold-up flap. A page of much-simplified hat-making directions closes this colorful fashion parade. Culturally inclusive the headwear is not, but its exuberant hues, its easily identifiable decorations, and the bright, merry eyes beneath each brim are bound to gain a coterie of young fans, besides serving as a springboard to an ongoing craft project that an adult and child can share. (Picture book. 4-7)