The following year, Stone starred in the comedy "The Rocker" (2008) playing Amelia Stone, the "straight face" bass guitarist in a band; she learned to play the bass for the role. The actress, who describes herself as "a big smiler and laugher", admitted that she found it difficult playing a character whose personality traits were so different from her own. The film, and her performance, received negative reviews from critics and was a commercial failure. Her next release, the romantic comedy "The House Bunny", performed better at the box office, becoming a moderate commercial success. The film saw her play the president of a sorority, and perform a cover version of the Waitresses' 1982 song "I Know What Boys Like". Reviews for the film were generally negative, but Stone was praised for her supporting role, with "TV Guide"s Ken Fox stating, "She's positively incandescent, lighting up a movie that would be pretty dim without her."