For 30 years, Spirit Halloween, the largest seasonal Halloween retailer in North America, has had its finger on the pulse of pop culture, as the year’s most unforgettable moments often translate to the most memorable Halloween costumes. In recent years, Charlie Sheen won our attention, Lady Gaga’s fashion choices had us buzzing, and the cast of The Jersey Shore fist-pumped onto the scene. In 2013, Halloween enthusiasts everywhere will be twerkin’ what their momma gave them.