Hollywood beauty Reese Witherspoon dreads days out at the beach, because she worries about the paparazzi taking photos of her sporting swimwear. The mother-of-two admits the prospect of her bikini-clad bottom gracing the pages of tabloid magazines and internet sites around the world terrifies her. Witherspoon says, "I hate that the paparazzi takes my picture when I'm on vacation: `Oh my god, did they see my butt? I hope they did not see my butt.'" Witherspoon's comments come just weeks after actress Jennifer Love Hewitt attacked the paparazzi for taking unflattering photos of her while celebrating her engagement on a beach in Hawaii.