Disaster (aka "Set Backs")
Episode Synopsis: 
After a fire claims the old Starlight House for Foster girls, Jerrica and company ask millionaire Howard Sands if they can use the mansion being offered as a prize in the battle of the bands contest while they look for new lodgings. Eric then hires Zipper to place a bomb in the building while the Misfits con their way onto the grounds. Later, Jem and friends are invited on a luxury cruise by the Countess Du Voisin, which gets crashed by the Misfits, again nearly causing mass loss of life after Pizzazz takes control of the ship. 
Cartoon wardrobe trivia:
All of the outfits that debuted on this show - except for the two bathing suits - were produced by Hasbro.
Let's Rock This Town (Jem Version, blue)
First appears in Disaster and again in: Kimber's Rebellion, Frame Up.
After this point the outfit changes to yellow with pink tights and is seen in: Video Wars.
Model sheet number Unknown, probably J-2. (Jerrica's side is JR-2)
Hasbro produced this fashion. We first see this fashion as being really different from the dolls' produced fashion; it's baby blue with white tights and pink ankle boots. 
Jem Bathing Suit 
Makes its first and only appearance in Disaster.
Model sheet number J-16. This is a video-only fashion, yet it is included in the normal Jem wardrobe line with its own model sheet number. 
Hasbro did not produce this fashion.
Trivia
Credits Used with permission from Shevona. See a scan of the actual cel model sheet. 

Rio's Bathing Suit
Makes its first and only appearance in Disaster.
Model sheet number RIO #5
Hasbro did not produce this fashion.
Credits Drawing donated by Heather Ann.
Truly Outrageous
First appears in Disaster and again in: Kimber's Rebellion, Frame Up, Starbright Part 1: Falling Star, Starbright Part 2: Colliding Stars, Broadway Magic, Island of Deception, The Jem Jam Part 1, Hollywood Jem Part 1
Model sheet number RIO #4
Hasbro produced this fashion. The dickie is shown to be purple with a purple bow tie, looks like the jacket pockets were omitted.
Trivia This fashion is slept in in Island of Deception. But makes a triumphant return from the cleaners to reappear in two subsequent episodes.
Command Performance
First appears in Disaster and again in: Kimber's Rebellion, Frame Up, Battle of the Bands, Starbright Part 2: Colliding Stars, In Stitches, KJem.
Model sheet number J-7
Hasbro produced this fashion. The same overall design as the produced fashion, but in purple tones. See also the pink jewellery in the cartoon version, which explains the pink shoes.
Trivia
Let's Rock This Town (Jerrica version)
Makes its first and only appearance in Disaster.
Model sheet number JR-2
Hasbro produced this fashion. Other than the shoes it looks a lot like the produced outfit for the dolls. It is missing several accessories. The hat is white, not straw coloured.
Trivia Our first glimpse at a Flip Side Fashion that is worn by Jerrica in the cartoon, then "flips" to Jem's side with Synergy's help.
Gettin' Down to Business (Jem)
First appears in Disaster and again in: Kimber's Rebellion, Frame Up, Battle of the Bands, Starbright Part 1: Falling Star, Starbright Part 2: Colliding Stars, In Stitches, The Rock Fashion Book
Model sheet number J-3
Hasbro produced this fashion. Other than the white sandals shown on the cartoon, it looks quite like the produced Hasbro fashion. On the cartoon however, Jem wears another skirt under her pink mini dress. The doll was not intended to wear both fashion parts. It can be argued either way, if Jem was supposed to wear the pink scarf around her waist, or if it was a Jerrica-only piece. 
Integrity produced this fashionLooks very much like the model sheet, but Jem's shoes are slightly different (may as well differentiate them a bit from Jerrica's!) and she comes with a bracelet that wasn't shown on the cartoon, as far as I'm aware.
Trivia Jerrica's side isn't shown until Kimber's Rebellion
Credits Thanks to Sharon for donating the original line art to the Jem wardrobe!
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!
Permanent Wave
First appears in Disaster and again in: Kimber's Rebellion, Frame Up, Battle of the Bands, Starbright Part 1: Falling Star, Starbright Part 2: Colliding Stars, Adventure in China, Last ResortsThe Rock Fashion Book, In Search of the Stolen Album, The Princess and the Singer, The Jem Jam Part 2, Scandal, One Jem Too Many, The Bands Break Up, Danse Time, KJem, Hollywood Jem Part 1 (with black earrings), Homeland, Heartland, Straight From the Heart, A Father Should Be.... (black earrings)
Model sheet number K-2
Hasbro produced this fashion. Most obvious difference from the produced fashion is the addition of socks in the cartoon. Also the belt is orange with black jewels (not white with a single orange one), the top/neckline has an orange ringer and no obvious bustier neckline showing.
Trivia I think Kimber wears this fashion nearly as much as her original stage fashion!
Credits Thanks to Walter for donating the original line art to the Jem wardrobe!
Dancin' The Night Away
First appears in Disaster and again in: Kimber's Rebellion, Frame Up, Battle of the Bands, Starbright Part 1: Falling Star, The Rock Fashion Book
Model sheet number SH-2
Hasbro produced this fashion. The produced fashion doesn't have earrings. It's otherwise pretty close to what Hasbro made.
Credits Thanks to Sharon for donating the original line art to the Jem wardrobe!
Makin' Mischief
First appears in Disaster and again in: Kimber's Rebellion, Frame Up, Starbright Part 1: Falling Star, Starbright Part 3: Rising Star, Adventure in ChinaThe Rock Fashion Book, Intrigue at the Indy 500, Glitter and Gold, The Bands Break Up, The Presidential Dilemma
Model sheet number ST-3
Hasbro produced this fashion. The produced fashion didn't have a hairbow or jewellery, the shoes are shown to be pumps on the cartoon.
Let the Music Play (original)
First appears in Disaster and again in: Frame Up. It is then revised and from Starbright Part 1: Falling Star, on it appears in a more simplified form
Model sheet number RX - 2
Hasbro produced this fashion. The produced fashion doesn't come with any jewellery or a sock. The shoes in the cartoon are shown to be pumps.
Trivia
  • One of a few fashions shown in the opening credits. I believe the drawings in this sequence were taken directly from of the original concept drawings, before they were modified/simplified to be reproduced as toys and cartoon models. 
Winning is Everything
First appears in Disaster and again in: Kimber's Rebellion, Frame Up, Starbright Part 1: Falling Star, Starbright Part 3: Rising Star, In Stitches, The Princess and the Singer, Glitter and Gold, KJem
Model sheet number P-2
Hasbro produced this fashion. It's significantly darker blue than the produced fashion. The hat is also shown to be shiny, there are lots of bracelets, a different design on the stomach, and the shoes are navy, not pink! I like Pizzazz's "Jemstar" earrings too!
Credits Thanks to Walter for donating the original line art to the Jem wardrobe!
Pizzazz Pirate
Makes its first and only appearance in Disaster.
Model sheet number Unknown
Hasbro did not produce this fashion.
Credits Thanks to xshowtimesynergyx for digging up this gem for me!
Thanks to sunnyday for donating this drawing to the wardrobe section!

Also featured in this episode (debuted earlier in the series) are the following fashions, not including recaps:

Aja Pajamas Kimber Pajamas Jerrica Pajamas Shana Pajamas Rio Original Outfit Pizzazz Original Outfit
Stormer Original Outfit Roxy Original Outfit Aja Original Outfit Kimber Original Outfit Jem Original Outfit Shana Original Outfit



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On To Jem Episode 3: Kimber's Rebellion