Who can resist a novelty sweater? Over the past few seasons, pullovers emblazoned with Givenchy’s snarling rottweilers and Kenzo’s tigers have become status symbols for the street-style set. Designers’ message for Fall: There is plenty more where those came from. Jeremy Scott and Raf Simons sent tongue-in-cheek intarsia knits down their runways, and Christopher Kane’s turtleneck depicting a healthy human brain electrified with ideas is destined to become a collector’s item. Others took a more classic approach. Sweaters inlaid with feminine floral motifs turned up at Billy Reid, Sister by Sibling, and Antonio Marras, while Victoria Beckham, Derek Lam, and Louise Goldin (left) stuck with graphic, geometric patterns.