It's hard to believe that a slew of your favorite stars will be hitting the big 5-0 this year. Celebrities like Kiefer Sutherland and Fred Armisen will all be hitting the half-century mark in the coming month, while others such as Adam Sandler and Janet Jackson already celebrated the special day. Based on their youthful looks, you'd never guess that the gorgeous Halle Berry and Cindy Crawford are also in the mix. Read on to see all the stars who have already turned or will soon be 50 this year, and then check out which celebrities are turning 40.