Audrina Patridge felt pressured to have plastic surgery

audrina-back.jpgDuring its April 27 premiere, fans of "The Hills" noticed a change in the show's opening title sequence. Inspired by Heidi Montag's disturbing transformation, the cast's name cards now show before-and-after photos of the cast members. Now there's no denying the various ways that fame, money, and in some cases, plain old time have changed not only Montag, but also Audrina Patridge and Kristin Cavallari.