Aja, Page 1

Aja Original Outfit
First appears in The Beginning and again in: Disaster, Kimber's Rebellion, Frame Up, Battle of the Bands.
After this point the outfit changes slightly - the top becomes more form-fitting with a slightly puckered neckline, the skirt loses the snakeskin pattern, and the sandals become pumps: Starbright Part 1: Falling Star, Starbright Part 2: Colliding Stars, Starbright Part 3: Rising Star, The World Hunger Shindig, Adventure in China, The Music Awards Part 1, Broadway Magic, In Search of the Stolen Album, The Princess and the Singer, The Jem Jam Part 1, Culture Clash, The Talent Search Part 1, Scandal, The Treasure Hunt, The Day the Music Died.
Model sheet number A-1. Has also been referred to as A-20.
Hasbro produced this doll & fashion. The cartoon looks quite bland compared to the produced toy. I guess it would be difficult to make it look all glittery and sparkly. 
Integrity produced this doll & Fashion
Aja's Funeral Dress
Makes its first and only appearance in The Beginning.
Model sheet number Unknown
Hasbro did not produce this fashion.
Trivia I had to guess at the hemline of the skirt & the shoe style as they are not shown on the cartoon.
Aja Casual (The Beginning)
First appears in The Beginning and again in: Kimber's Rebellion
Model sheet number Unknown
Hasbro did not produce this fashion.
Aja Pajamas
First appears in The Beginning and again in: Disaster
Model sheet number A-N. It is not a normal model sheet number, the "N" probably signified night clothes.
Hasbro did not produce this fashion.
Encore
First appears in Disaster and again in: Kimber's Rebellion, Frame Up, Battle of the Bands, Starbright Part 1: Falling StarThe Rock Fashion Book
Model sheet number A-3. There is an A-3a model sheet where she is wearing at hat. 
Hasbro produced this fashion. The produced fashion does not have the gloves, hairpiece or necklace.
Trivia
  • There is a poster in the background of Jem wearing a purple version of Encore - based strongly on a famous Art Nouveau work, Woman Holding Bay Leaves And A Feather by Alphonse Mucha- shown in Kimber's Rebellion
Credits Thanks to Sharon for donating the A3a original line art to the Jem wardrobe!
Only The Beginning
First appears in Kimber's Rebellion and again in: Battle of the Bands, Starbright Part 2: Colliding Stars, Adventure in China, Broadway Magic, The Jem Jam Part 2, The Bands Break Up, Homeland, Heartland, Straight From the Heart
Model sheet number A-2
Hasbro produced this fashion. Almost unrecognizable in these colours! The Hasbro version is in pink with gold shoes. The belt is not silver net but pearlized pebbly texture. The Hasbro fashion has no hat and only one glove. 
Credits Thanks to Sharon for donating the original line art to the Jem wardrobe!
Music in the Air (?)
First appears in Frame Up and again in: Starbright Part 1: Falling Star, Starbright Part 3: Rising Star, Last Resorts, In StitchesThe Rock Fashion Book, Broadway Magic, In Search of the Stolen Album, The Princess and the Singer, Culture Clash, The Talent Search Part 1, KJem, The Presidential Dilemma, Homeland, Heartland, Straight From the Heart
Model sheet number A-5
Hasbro produced this fashion. I'm still dithering on whether this is actually Music in the Air or not... but the outfit components are the same. The differences are that the Hasbro version is not in red and white but rather fuchsia, yellow and white. The designs on the Hasbro shirt includes hearts and squiggles, not the boomerang shaped ones on the cartoon. The produced fashion does not come with earrings. 
Trivia
  • Despite being a Flip Side fashion, it's shown on Aja in the cartoon. 
Credits Thanks to Walter for donating the original line art to the Jem wardrobe!
Aja 80's Japan
First appears in Frame Up and again in: Battle of the Bands, Starbright Part 1: Falling Star, Starbright Part 2: Colliding Stars, Starbright Part 3: Rising Star, In Stitches, The Music Awards Part 1The Rock Fashion Book, The Bands Break Up, The Jazz Player
Model sheet number A-4
Hasbro did not produce this fashion.
Aja Bank Employee
Makes its first and only appearance in The Battle of the Bands.
Model sheet number This is a song-only fashion and does not likely have a regular model sheet number. 
Hasbro did not produce this fashion.
Aja Cheerleader
Makes its first and only appearance in The Battle of the Bands.
Model sheet number This is a song-only fashion and does not likely have a regular model sheet number. 
Hasbro did not produce this fashion.

I guessed on her shoe & pom pom colours.
Aja Maid
Makes its first and only appearance in The Battle of the Bands.
Model sheet number This is a song-only fashion and does not likely have a regular model sheet number. 
Hasbro did not produce this fashion.
Trivia I guessed at the skirt length and shoes.
Aja Starbright Party Dress
First appears in Starbright Part 1: Falling Star and again in: In Stitches
Model sheet number
Hasbro did not produce this fashion.
Aja Starbright stage costume
First appears in Starbright Part 1: Falling Star and again in: Starbright Part 3: Rising Star, The Jem Jam Part 2
Model sheet number A-8
Hasbro did not produce this fashion.
Credits Thanks to Walter for donating the original line art to the Jem wardrobe
Aja Prisoner Costume
Makes its first and only appearance in Starbright Part 2: Colliding Stars.
Model sheet number Unknown
Hasbro did not produce this fashion.
Aja casual cowboy
First appears in The World Hunger Shindig and again in: The Music Awards Part 2, The Bands Break Up, Father's Day, Rock 'N Roll Express
Model sheet number Unknown
Hasbro did not produce this fashion.
Aja floral bathing suit
First appears in The World Hunger Shindig and again in: Adventure in China, The Talent Search Part 2, A Change of Heart
Model sheet number Unknown
Hasbro did not produce this fashion.
Aja Cowboy Stage Costume
First appears in The World Hunger Shindig and again in: Rock 'N Roll Express
Model sheet number A-13
Hasbro did not produce this fashion.
Aja Olive Spiral Dress
First appears in The World Hunger Shindig and again in: In Stitches, The Music Awards Part 1, The Princess and the Singer, Danse Time
Model sheet number A-7
Hasbro did not produce this fashion.
Credits Thanks to Walter for donating the original line art to the Jem wardrobe
Aja Chinese Casual
Makes its first an only appearance in Adventure in China.
Model sheet number Unknown
Hasbro did not produce this fashion.
Aja Chinese Stage Fashion
Makes its first an only appearance in Adventure in China.
Model sheet number A-15
Hasbro did not produce this fashion.

Continue onto Page 2 of Aja Cartoon fashions