With the Royal Wedding quickly approaching, most of the focus has fallen squarely on Kate Middleton's shoulders. How did she lose all that weight? Will she wear Queen Elizabeth's wedding tiara? How will she stack up against Princess Di? But, what about Prince Harry's ex-gf Chelsy Davy? Rumor has it they're back together and might be heading down the aisle next. While most will argue over whose wedding dress looks better, we ask, who looks hotter in a bikini: Kate Middleton or Chelsy Davy? See their pics and vote after the jump.