WWD recently reported celebrities have energized the shapewear market. How so? By wearing underwear as outerwear! To prove it, annual sales of shapewear grew 10.6 percent from March '09 to February '10. Wow. You know who the trendsetters are: Madonna, Lady Gaga, Rihanna, Katy Perry, Dita Von Teese, and so on. Proceed to see them, and more, rocking this risque trend.