Aly Michalka & Friends

Actress Aly Michalka is seen with her younger sister Amanda Michalka.

Actress Aly Michalka is seen with her "Hellcats" co-star, actress Ashley Tisdale.

Actress Aly Michalka attends the "Easy A" premiere on Sept. 13, 2010 in Los Angeles.

Actress Aly Michalka is seen with actress Minka Kelly and her younger sister, Amanda Michalka.

"Gossip Girl's" Penn Badgley and actress Aly Michalka attend the "Easy A" premiere on Sept. 13, 2010 in Los Angeles.

Actress Aly Michalka is seen with her "Hellcats" co-star actress Ashley Tisdale.

Actress Aly Michalka attends the The CW Network UpFront at Madison Square Garden on May 20, 2010, in New York City.

Actress Aly Michalka is seen with her "Hellcats" co-star actress Ashley Tisdale.

Actress Al Michalka arrives at the premiere of "RED" on Oct. 11, 2010, in Los Angeles.

Actress Aly Michalka speaks onstage during the "Hellcats" panel during the 2010 Summer TCA Tour on July 29, 2010 in Beverly Hills.

Actress Aly Michalka is seen with Weezer lead singer Rivers Cuomo and her younger sister Amanda Michalka.