Frame Up
Frame Up: The Misfits and Jem are on a double bill in Las Vegas for a benefit concert.  In an attempt to get rid of Jem in order to be the main act, Eric and the Misfits frame Jem for stealing the charity's money. 

This episode is the first one to show more than a handful of  unproduced fashions, many of which became commonly used throughout the show's run.
 
Like a Dream (Jerrica half) Was produced Up & Rockin' (Jerrica) Was Produced
First appears (on Jerrica*) in Frame Up and again in:

Starbright Part 1: Falling Star, The Rock Fashion Book, In Search of the Stolen Album, Intrigue at the Indy 500, KJem, Trick or Techrat, Journey Through Time

Jem's half appears in an earlier episode (Kimber's Rebellion.)

*Actually first appears, more or less, on a guest at Countess Du Voisin's party in Disaster.

First appears in Frame Up and again in:

Battle of the Bands, Starbright Part 1: Falling Star, Broadway Magic

Jem's half appears in an earlier episode (The Beginning.)

Jem Purple Fantasy Dress Stormer Mystery Lady
First appears in Frame Up and again in:

Starbright Part 2: Colliding Stars, Broadway Magic, Mardi Gras, Beauty and the Rock Promoter

The Jem Model sheet number for this fashion is J-11.

Used with permission from Arashi842's Gallery.  

Makes it's first and only appearance in Frame Up
Jem Blue Fantasy Dress Rio Men in Tights costume
Makes it's first and only appearance in Frame Up

This is a video-only fashion, and was most likely designed by the video's designer, and will not be seen during any non-video segments.

Makes it's first and only appearance in Frame Up.

This is a video-only fashion, and was most likely designed by the video's designer, and will not be seen during any non-video segments.

Rock Country (Jerrica half) Was produced (more or less) Sophisticated Lady (Jem half) Was Produced
Makes it's first and only appearance in Frame Up

I suppose it is debatable if this *really* is based on Rock Country but I'm going to wager it is. 

See the version (Jem's side) from the opening credits.

First appears in Frame Up and again in:

Starbright Part 1: Falling Star, Starbright Part 3: Rising Star, In Stitches, The Princess and the Singer, Glitter and Gold, The Bands Break Up, KJem

Looks very different from the produced fashion (colour scheme, hat design). 

The Jem Model sheet number for this fashion is J-9.

Kimber Orange Boomerang outfit Aja Boomerang Outfit
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 2, The Rock Fashion Book, Broadway Magic, In Search of the Stolen Album, One Jem Too ManyThe Bands Break Up, The Treasure Hunt, Journey To Shangri-La

The Jem Model sheet number for this fashion is K-4.

First appears in Frame Up and again in:

Starbright Part 1: Falling Star, Starbright Part 3: Rising Star, Last Resorts, In Stitches, The 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

The Jem Model sheet number for this fashion is A-5.

Rio Purple/Grey Outfit Aja 80's Japan
First appears in Frame Up and again in:

The Music Awards Part 1, Broadway Magic, Hot Time in Hawaii, Intrigue at the Indy 500, Straight From the Heart

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 1, The Rock Fashion Book, The Bands Break Up, The Jazz Player

Kimber Lavender Shorts Set Shana Casual 2 
First appears in Frame Up and again in:

Battle of the Bands, In Stitches, Island of Deception, Aztec Enchantment (maybe), The Jazz Player, Alone Again, Out of the Past, Straight From the Heart, Change of Heart

First appears in Frame Up and again in:

Battle of the Bands

This is a revision of the original Shana Casual. which debuted in The Beginning.  After Battle of the Bands, it's replaced with yet another version.

The Jem Model sheet number for this fashion is SH-4

Jerrica Boomerang Outfit
First appears in Frame Up and again in:

Battle of the BandsThe Music Awards Part 2, The Rock Fashion Book, The Talent Search Part 1, The Talent Search Part 2, One Jem Too Many, The Bands Break Up, The Jazz Player, Alone Again, Trick or Techrat, The Presidential Dilemma with light blue pumps (match shirt), Out of the Past, A Father Should Be....

The Jem Model sheet number for this fashion is JR-7.

Fashions from Previous Episodes (not counting recaps)

Jem Original Outfit
Kimber Original Outfit
Aja Original Outfit
Shana Original Outfit
Rio Original Outfit
Roxy Original Outfit
Stormer Original Outfit
Pizzazz Original Outfit
Let the Music Play
Winning is Everything
Makin Mischief
Up & Rockin (Jem)
Truly Outrageous
City Lights (Jem)
Let's Rock This Town (Jem, blue)
Rio's Trench coat
Jem's Trench coat
Just Misbehavin'
Outta My Way (pink)
Like a Dream (Jem)
Encore
Permanent Wave
Dancin' the Night Away
Command Performance
Gettin' Down to Business (Jem)
 

Back to Jem Episode 3, Kimber's Rebellion

On To Jem Episode 5: The Battle of the Bands