For the new “Mean Girls,” the costume designer, Tom Broecker, dressed the imperious Plastics in a mix of high-end labels and fast fashion. Gretchen Wieners (Bebe Wood), left, has an Asos T ...

In the two decades since “Mean Girls,” came out, the Halloween costume spectrum has filled with more choice — and a lot of creativity. Take Heidi Klum, who has made a sport of debuting ...