Aaron Carter is the latest contestant injured on this season's Dancing With the Stars. The pop singer hurt his knee during dress rehearsal on Monday, but has vowed to keep on dancing. "I have to get X-rays on my knee!" he posted on his Twitter page. "Let's hope I don't need any shots. Even though they've already said I do!" While Aaron doesn't plan to leave the show, fellow contestant Tom DeLay was forced to withdraw after suffering stress fractures in both of his feet. Here's to hoping both men are back in tip-top shape soon.