Promalicious is the twenty-first episode of Season One. The episode, obviously, is the prom episode. The episode was originally supposed to be posted before January 12, 2013 however it was delayed and postponed to January 22, 2013.
- Take My Breath Away by Berlin. Sung by Winter Delgado and Jason Hill.
- Trouble is a Friend by Lenka. Sung by Laura Tomlinson and Liz Peep.
- Switch Me On by Shannon Noll. Sung by Freddie Weathers and Jason Hill.
- I Knew You Were Trouble by Taylor Swift. Sung by Liz Peep.
- Don't Worry, Be Happy by Guy Sebastian. Sung by The Unitards (Solos by Andy Jones, Jason Hill, Teddy Mapp, Poppy Hill, Daisy Evans, Amanda Evans, Sugar Motta, Simon Click, Mark LaTerri, Freddie Weathers, Tommy Barlow, Junette Harris, Amy Sky, Jesse St. James, Spider Reed, Laura Tomlinson and Carlton Ayers).
- Chasing Pavements/Turning Tables by Adele/Adele. Sung by Amanda Evans and Nick Young with The Unitards.
- Several songs were cut from this episode. The only revealed song that was cut is "Bad" by Michael Jackson, which was to be sung by Ava, Cameron, Liz and Laura after Ava's "prank" took place in the hotel, however, it was cut. Despite the song not being used in the episode, it was still released as a single.
- Originally, Nick and Amanda's duet of "Chasing Pavements/Turning Tables" was just "Chasing Pavements" and it was going to be a solo sung by Teddy.
- Dan Benson as Simon Click
- Sharon Leal as Margret Ellis
- Kristin Chenoweth as April Rhodes
- Brandon Stoughton as Patch Evans
- Charlie McDermott as Cameron Lawrence
- Zachary Levi as Patrick Jelly
- Annalynne McCord as Ava Collins
- BooBoo Stewart as Nick Young
- Alexander Ludwig as Angelo Jotts
- Julia Roberts as Helen Delgado
- Robin Williams as Leo Delgado
- Owen Wilson as Roger LaTerri
- Jessica Lange as Ginger McCliff
- Miranda Cosgrove as Daisy Evans
- Vanessa Lengies as Sugar Motta