Women are known for having many layers - after all, we're made up of all sorts of ingredients. Nobody knows this more than Rheanna Cartier, 21, a pageant queen and Swimsuit USA International Finalist. Though the international beauty queen knows a thing or two about how to strut on the catwalk, she's actually preparing to turn her hand to something very different. She's going to take part in a boxing event, and will battle it out in a six-minute fight on March 23. She may be known for her