The actress and one half of "Aly and AJ" talks about her unique experience going solo on the Fox reality series.

"I've never done anything without her on stage," the Aly & AJ musician tells PEOPLE of her sister after earning third place ...

Jerod Harris/Getty; Amy Sussman/WireImage AJ Michalka ... back on time spent with the Grammy winner during their time on Disney Channel. Not only did Aly & AJ open for Cyrus on the Best of Both ...

AJ Michalka and Miley Cyrus ... spent with the Grammy winner during their time on Disney Channel. Not only did Aly & AJ open ...

The Semi Finals opened with Wasp, Strawberry Shortcake and the Buffalos singing “Some Nights,” by Fun. With Strawberry ...

AJ Michalka and Miley Cyrus go way back. The Aly & AJ musician and actress, 33, recently performed a cover of Cyrus' "Wrecking Ball" during her run as Strawberry Shortcake on season 12 of The ...

They also attempted to guess which celebrity was behind the mask. A majority of the fans felt it was AJ Michalka. "#strawberryshortcakemask is AJ Michalka of @alyandaj. Mouse ears (Mickey Mouse ...

AJ Michalka and Miley Cyrus ... spent with the Grammy winner during their time on Disney Channel. Not only did Aly & AJ open for Cyrus on the Best of Both Worlds Tour in 2006, but Hannah Montana ...